A man casts his ballot during parliamentary elections in the town of Bankya near capital Sofia, Bulgaria on Sunday, April 4, 2021. Bulgarians are heading to the polls on Sunday to cast ballots for a new parliament after months of anti-government protests and amid a surge of coronavirus infections. (AP Photo/Visar Kryeziu)

A man casts his ballot during parliamentary elections in the town of Bankya near capital Sofia, Bulgaria on Sunday, April 4, 2021. Bulgarians are heading to the polls on Sunday to cast ballots for a new parliament after months of anti-government protests and amid a surge of coronavirus infections. (AP Photo/Visar Kryeziu)

Voters respecting social distance wait to cast their ballot during parliamentary elections in the town of Bankya near capital Sofia, Bulgaria on Sunday, April 4, 2021. Bulgarians are heading to the polls on Sunday to cast ballots for a new parliament after months of anti-government protests and amid a surge of coronavirus infections. (AP Photo/Visar Kryeziu)

A man casts his ballot during parliamentary elections in the town of Bankya near capital Sofia, Bulgaria on Sunday, April 4, 2021. Bulgarians are heading to the polls on Sunday to cast ballots for a new parliament after months of anti-government protests and amid a surge of coronavirus infections. (AP Photo/Visar Kryeziu)

A man casts his ballot during parliamentary elections in the town of Bankya near capital Sofia, Bulgaria on Sunday, April 4, 2021. Bulgarians are heading to the polls on Sunday to cast ballots for a new parliament after months of anti-government protests and amid a surge of coronavirus infections. (AP Photo/Visar Kryeziu)

A man casts his ballot during parliamentary elections in the town of Bankya near capital Sofia, Bulgaria on Sunday, April 4, 2021. Bulgarians are heading to the polls on Sunday to cast ballots for a new parliament after months of anti-government protests and amid a surge of coronavirus infections. (AP Photo/Visar Kryeziu)

A voter's feet are seen behind a partition as he casts his vote during the parliamentary elections in the town of Bankya, Bulgaria, Sunday, April 4, 2021. Bulgarians are heading to the polls on Sunday to cast ballots for a new parliament after months of anti-government protests and amid a surge of coronavirus infections. (AP Photo/Visar Kryeziu)

Election official in protective clothes carries a ballot box and election material as the polls open for parliamentary elections in the town of Bankya near capital Sofia, Bulgaria on Sunday, April 4, 2021. Bulgarians are heading to the polls on Sunday to cast ballots for a new parliament after months of anti-government protests and amid a surge of coronavirus infections. (AP Photo/Visar Kryeziu)

Voters arrive at a polling station during parliamentary elections in the town of during the parliamentary elections in the town of Bankya, Bulgaria, Sunday, April 4, 2021. Bulgarians are heading to the polls on Sunday to cast ballots for a new parliament after months of anti-government protests and amid a surge of coronavirus infections. (AP Photo/Visar Kryeziu)

A man walks past a building painted in Bulgarian national flag colors as he arrives at a polling station during parliamentary elections in the town of during the parliamentary elections in the town of Bankya, Bulgaria, Sunday, April 4, 2021. Bulgarians are heading to the polls on Sunday to cast ballots for a new parliament after months of anti-government protests and amid a surge of coronavirus infections. (AP Photo/Visar Kryeziu)

A man casts his ballot in a digital machine during parliamentary elections in the town of during the parliamentary elections in the town of Bankya, Bulgaria, Sunday, April 4, 2021. Bulgarians are heading to the polls on Sunday to cast ballots for a new parliament after months of anti-government protests and amid a surge of coronavirus infections. (AP Photo/Visar Kryeziu)

A health worker sprays disinfectant at a polling station during parliamentary elections in the town of during the parliamentary elections in the town of Bankya, Bulgaria, Sunday, April 4, 2021. Bulgarians are heading to the polls on Sunday to cast ballots for a new parliament after months of anti-government protests and amid a surge of coronavirus infections. (AP Photo/Visar Kryeziu)

A voter checks the electoral material before voting during parliamentary elections in the town of Bankya near capital Sofia, Bulgaria on Sunday, April 4, 2021. Bulgarians are heading to the polls on Sunday to cast ballots for a new parliament after months of anti-government protests and amid a surge of coronavirus infections. (AP Photo/Visar Kryeziu)

A mother holds her daughter as she casts her ballot during parliamentary elections in the town of during the parliamentary elections in the town of Bankya, Bulgaria, Sunday, April 4, 2021. Bulgarians are heading to the polls on Sunday to cast ballots for a new parliament after months of anti-government protests and amid a surge of coronavirus infections. (AP Photo/Visar Kryeziu)

A woman casts her ballot during parliamentary elections in the town of during the parliamentary elections in the town of Bankya, Bulgaria, Sunday, April 4, 2021. Bulgarians are heading to the polls on Sunday to cast ballots for a new parliament after months of anti-government protests and amid a surge of coronavirus infections. (AP Photo/Visar Kryeziu)

A woman casts her ballot during parliamentary elections in the town of during the parliamentary elections in the town of Bankya, Bulgaria, Sunday, April 4, 2021. Bulgarians are heading to the polls on Sunday to cast ballots for a new parliament after months of anti-government protests and amid a surge of coronavirus infections. (AP Photo/Visar Kryeziu)

A transparent box holds ballots during parliamentary elections in the town of during the parliamentary elections in the town of Bankya, Bulgaria, Sunday, April 4, 2021. Bulgarians are heading to the polls on Sunday to cast ballots for a new parliament after months of anti-government protests and amid a surge of coronavirus infections. (AP Photo/Visar Kryeziu)

A woman casts her ballot during parliamentary elections in the town of during the parliamentary elections in the town of Bankya, Bulgaria, Sunday, April 4, 2021. Bulgarians are heading to the polls on Sunday to cast ballots for a new parliament after months of anti-government protests and amid a surge of coronavirus infections. (AP Photo/Visar Kryeziu)

A woman checks the candidates list before voting during parliamentary elections in the town of during the parliamentary elections in the town of Bankya, Bulgaria, Sunday, April 4, 2021. Bulgarians are heading to the polls on Sunday to cast ballots for a new parliament after months of anti-government protests and amid a surge of coronavirus infections. (AP Photo/Visar Kryeziu)

Voters check the electoral material before voting during parliamentary elections in the town of during the parliamentary elections in the town of Bankya, Bulgaria, Sunday, April 4, 2021. Bulgarians are heading to the polls on Sunday to cast ballots for a new parliament after months of anti-government protests and amid a surge of coronavirus infections. (AP Photo/Visar Kryeziu)

A man holds his ballot during parliamentary elections in the town of during the parliamentary elections in the town of Bankya, Bulgaria, Sunday, April 4, 2021. Bulgarians are heading to the polls on Sunday to cast ballots for a new parliament after months of anti-government protests and amid a surge of coronavirus infections. (AP Photo/Visar Kryeziu)

An old woman is assisted to cast her ballot during parliamentary elections in the town of during the parliamentary elections in the town of Bankya, Bulgaria, Sunday, April 4, 2021. Bulgarians are heading to the polls on Sunday to cast ballots for a new parliament after months of anti-government protests and amid a surge of coronavirus infections. (AP Photo/Visar Kryeziu)

A policeman stands guard as COVID-19 mobile polling station goes to addresses of sick people to cast their vote, Sofia, Bulgaria, Sunday, April 4, 2021. Bulgarians are heading to the polls on Sunday to cast ballots for a new parliament after months of anti-government protests and amid a surge of coronavirus infections. (AP Photo/Valentina Petrova)

People dressed in protective clothing representing COVID-19 mobile polling station go to address of sick people for their casting vote, Sofia, Bulgaria, Sunday, April 4, 2021. Bulgarians are heading to the polls on Sunday to cast ballots for a new parliament after months of anti-government protests and amid a surge of coronavirus infections. (AP Photo/Valentina Petrova)

People dressed in protective clothing representing COVID-19 mobile polling station look for the address of sick people for voting, in Sofia, Bulgaria, Sunday, April 4, 2021. Bulgarians are heading to the polls on Sunday to cast ballots for a new parliament after months of anti-government protests and amid a surge of coronavirus infections. (AP Photo/Valentina Petrova)

Election officials run an election mobile polling station dressed in protective clothing, look for the addresses of sick people to cast their vote, in Sofia, Bulgaria, Sunday, April 4, 2021. Bulgarians are heading to the polls on Sunday to cast ballots for a new parliament after months of anti-government protests and amid a surge of coronavirus infections. (AP Photo/Valentina Petrova)

Policeman stands guard as election officials run an election mobile polling station dressed in protective clothing, for sick people to cast their vote, in Sofia, Bulgaria, Sunday, April 4, 2021. Bulgarians are heading to the polls on Sunday to cast ballots for a new parliament after months of anti-government protests and amid a surge of coronavirus infections.(AP Photo/Valentina Petrova)

Policeman stands guard election officials run an election mobile polling station dressed in protective clothing, look for the addresses of sick people to cast their vote, in Sofia, Bulgaria, Sunday, April 4, 2021. Bulgarians are heading to the polls on Sunday to cast ballots for a new parliament after months of anti-government protests and amid a surge of coronavirus infections.(AP Photo/Valentina Petrova)

Policeman stands guard as election officials run an election mobile polling station dressed in protective clothing, for sick people to cast their vote, in Sofia, Bulgaria, Sunday, April 4, 2021. Bulgarians are heading to the polls on Sunday to cast ballots for a new parliament after months of anti-government protests and amid a surge of coronavirus infections.(AP Photo/Valentina Petrova)

Election officials run an election mobile polling station dressed in protective clothing, look for the addresses of sick people to cast their vote, in Sofia, Bulgaria, Sunday, April 4, 2021. Bulgarians are heading to the polls on Sunday to cast ballots for a new parliament after months of anti-government protests and amid a surge of coronavirus infections.(AP Photo/Valentina Petrova)

Policeman stands guard as election officials run an election mobile polling station dressed in protective clothing, for sick people to cast their vote, in Sofia, Bulgaria, Sunday, April 4, 2021. Bulgarians are heading to the polls on Sunday to cast ballots for a new parliament after months of anti-government protests and amid a surge of coronavirus infections.(AP Photo/Valentina Petrova)

A COVID-19 positive person casts his vote at mobile polling station in Sofia, Bulgaria, Sunday, April 4, 2021. Election officials are running an election mobile polling station dressed in protective clothing, for sick people to cast their vote. Bulgarians are heading to the polls on Sunday to cast ballots for a new parliament after months of anti-government protests and amid a surge of coronavirus infections. (AP Photo/Valentina Petrova)

A person casts his vote as election officials run an election mobile polling station dressed in protective clothing, for sick people to cast their vote, in Sofia, Bulgaria, Sunday, April 4, 2021. Bulgarians are heading to the polls on Sunday to cast ballots for a new parliament after months of anti-government protests and amid a surge of coronavirus infections.(AP Photo/Valentina Petrova)

A COVID-19 positive person prepares to cast his vote as election officials run an election mobile polling station dressed in protective clothing, for sick people to cast their vote, in Sofia, Bulgaria, Sunday, April 4, 2021. Bulgarians are heading to the polls on Sunday to cast ballots for a new parliament after months of anti-government protests and amid a surge of coronavirus infections.(AP Photo/Valentina Petrova)

Kornelia Ninova, Bulgarian Socialists Party leader casts her vote in Sofia, Bulgaria, Sunday, April 4, 2021. Bulgarians are heading to the polls on Sunday to cast ballots for a new parliament after months of anti-government protests and amid a surge of coronavirus infections. (AP Photo/Valentina Petrova)

Kornelia Ninova, Bulgarian Socialists Party leader casts her vote in Sofia, Bulgaria, Sunday, April 4, 2021. Bulgarians are heading to the polls on Sunday to cast ballots for a new parliament after months of anti-government protests and amid a surge of coronavirus infections. (AP Photo/Valentina Petrova)

Kornelia Ninova, Bulgarian Socialists Party leader casts her vote in Sofia, Bulgaria, Sunday, April 4, 2021. Bulgarians are heading to the polls on Sunday to cast ballots for a new parliament after months of anti-government protests and amid a surge of coronavirus infections. (AP Photo/Valentina Petrova)

Kornelia Ninova, Bulgarian Socialists Party leader casts her vote in Sofia, Bulgaria, Sunday, April 4, 2021. Bulgarians are heading to the polls on Sunday to cast ballots for a new parliament after months of anti-government protests and amid a surge of coronavirus infections. (AP Photo/Valentina Petrova)

A woman with fogged glasses casts her vote using a machine in Sofia, Bulgaria, Sunday, April 4, 2021. Bulgarians are heading to the polls on Sunday to cast ballots for a new parliament after months of anti-government protests and amid a surge of coronavirus infections. (AP Photo/Valentina Petrova)

SOFIA, BULGARIA - APRIL 04 : Volunteers team in a protective suits carry a remote polling station visit a voter's address during the parliamentary elections in Sofia, Bulgaria on April 04, 2021. Due to COVID-19 pandemic measures a lot of people decide to use a remote polling station for the parliamentary elections 2021 in Bulgaria and cast their votes from home. Borislav Troshev / Anadolu Agency/ABACAPRESS.COM

SOFIA, BULGARIA - APRIL 04 : Volunteers team in a protective suits carry a remote polling station visit a voter's address during the parliamentary elections in Sofia, Bulgaria on April 04, 2021. Due to COVID-19 pandemic measures a lot of people decide to use a remote polling station for the parliamentary elections 2021 in Bulgaria and cast their votes from home. Borislav Troshev / Anadolu Agency/ABACAPRESS.COM

SOFIA, BULGARIA - APRIL 04 : Voters waits to cast their votes in a mobile polling station during the parliamentary elections in Sofia, Bulgaria on April 04, 2021. Due to COVID-19 pandemic measures a lot of people decide to use a remote polling station for the parliamentary elections 2021 in Bulgaria and cast their votes from home. Borislav Troshev / Anadolu Agency/ABACAPRESS.COM

SOFIA, BULGARIA - APRIL 04 : Volunteers team in a protective suits carry visit a voter's address during the parliamentary elections in Sofia, Bulgaria on April 04, 2021. Due to COVID-19 pandemic measures a lot of people decide to use a remote polling station for the parliamentary elections 2021 in Bulgaria and cast their votes from home. Borislav Troshev / Anadolu Agency/ABACAPRESS.COM

SOFIA, BULGARIA - APRIL 04 : Voter cast his vote in a remote polling station during the parliamentary elections in Sofia, Bulgaria on April 04, 2021. Due to COVID-19 pandemic measures a lot of people decide to use a remote polling station for the parliamentary elections 2021 in Bulgaria and cast their votes from home. Borislav Troshev / Anadolu Agency/ABACAPRESS.COM

SOFIA, BULGARIA - APRIL 04 : Volunteers team in a protective suits carry a remote polling station visit a voter's address during the parliamentary elections in Sofia, Bulgaria on April 04, 2021. Due to COVID-19 pandemic measures a lot of people decide to use a remote polling station for the parliamentary elections 2021 in Bulgaria and cast their votes from home. Borislav Troshev / Anadolu Agency/ABACAPRESS.COM

SOFIA, BULGARIA - APRIL 04 : Volunteers team in a protective suits carry a remote polling station visit a voter's address during the parliamentary elections in Sofia, Bulgaria on April 04, 2021. Due to COVID-19 pandemic measures a lot of people decide to use a remote polling station for the parliamentary elections 2021 in Bulgaria and cast their votes from home. Borislav Troshev / Anadolu Agency/ABACAPRESS.COM

SOFIA, BULGARIA - APRIL 04 : Volunteers team in a protective suits carry a remote polling station visit a voter's address during the parliamentary elections in Sofia, Bulgaria on April 04, 2021. Due to COVID-19 pandemic measures a lot of people decide to use a remote polling station for the parliamentary elections 2021 in Bulgaria and cast their votes from home. Borislav Troshev / Anadolu Agency/ABACAPRESS.COM

SOFIA, BULGARIA - APRIL 04 : A volunteer in a protective suit holds the remote polling station during the parliamentary elections in Sofia, Bulgaria on April 04, 2021. Due to COVID-19 pandemic measures a lot of people decide to use a remote polling station for the parliamentary elections 2021 in Bulgaria and cast their votes from home. Borislav Troshev / Anadolu Agency/ABACAPRESS.COM

SOFIA, BULGARIA - APRIL 04 : Volunteers team in a protective suits carry a remote polling station visit a voter's address during the parliamentary elections in Sofia, Bulgaria on April 04, 2021. Due to COVID-19 pandemic measures a lot of people decide to use a remote polling station for the parliamentary elections 2021 in Bulgaria and cast their votes from home. Borislav Troshev / Anadolu Agency/ABACAPRESS.COM

SOFIA, BULGARIA - APRIL 04 : Volunteers team in a protective suits carry a remote polling station visit a voter's address during the parliamentary elections in Sofia, Bulgaria on April 04, 2021. Due to COVID-19 pandemic measures a lot of people decide to use a remote polling station for the parliamentary elections 2021 in Bulgaria and cast their votes from home. Borislav Troshev / Anadolu Agency/ABACAPRESS.COM

SOFIA, BULGARIA - APRIL 04 : Volunteers team in a protective suits carry a remote polling station visit a voter's address during the parliamentary elections in Sofia, Bulgaria on April 04, 2021. Due to COVID-19 pandemic measures a lot of people decide to use a remote polling station for the parliamentary elections 2021 in Bulgaria and cast their votes from home. Borislav Troshev / Anadolu Agency/ABACAPRESS.COM

A pedestrian walks past election posters near a mosque under renovation, in the town of Kyustendil, Bulgaria, Saturday, April 3, 2021. After months of nationwide anti-government protests over corruption, stalled reforms and a stagnating economy in the EU's poorest member state, Bulgarians are gearing up for a parliamentary election in the shadow of the coronavirus pandemic. (AP Photo/Visar Kryeziu)

A pedestrian walks past election posters near a under renovation mosque in the town of Kyustendil, Bulgaria on Saturday, April 3, 2021. After months of nationwide anti-government protests over corruption, stalled reforms and a stagnating economy in the EU's poorest member state, Bulgarians are gearing up for a parliamentary election in the shadow of the coronavirus pandemic. (AP Photo/Visar Kryeziu)

Bulgarians sit at a bus station covered in election posters in the town of Kyustendil, Bulgaria, Saturday, April 3, 2021. After months of nationwide anti-government protests over corruption, stalled reforms and a stagnating economy in the EU's poorest member state, Bulgarians are gearing up for a parliamentary election in the shadow of the coronavirus pandemic. (AP Photo/Visar Kryeziu)

A pedestrian walks past election posters near a mosque under renovation, in the town of Kyustendil, Bulgaria, Saturday, April 3, 2021. After months of nationwide anti-government protests over corruption, stalled reforms and a stagnating economy in the EU's poorest member state, Bulgarians are gearing up for a parliamentary election in the shadow of the coronavirus pandemic. (AP Photo/Visar Kryeziu)

Bulgarians walk past election posters near a under renovation mosque in the town of Kyustendil, Bulgaria, Saturday, April 3, 2021. After months of nationwide anti-government protests over corruption, stalled reforms and a stagnating economy in the EU's poorest member state, Bulgarians are gearing up for a parliamentary election in the shadow of the coronavirus pandemic. (AP Photo/Visar Kryeziu)

A pedestrian walks past a bus stand covered with election posters, in the town of Kyustendill, Bulgaria, Saturday, April 3, 2021. After months of nationwide anti-government protests over corruption, stalled reforms and a stagnating economy in the EU's poorest member state, Bulgarians are gearing up for a parliamentary election in the shadow of the coronavirus pandemic. (AP Photo/Visar Kryeziu)

A couple walks past a bus stand covered with election posters in the town of Kyustendil, Bulgaria, Saturday, April 3, 2021. After months of nationwide anti-government protests over corruption, stalled reforms and a stagnating economy in the EU's poorest member state, Bulgarians are gearing up for a parliamentary election in the shadow of the coronavirus pandemic. (AP Photo/Visar Kryeziu)

A pedestrian walks past election posters of two rival parties in capital Sofia, Bulgaria on Saturday, April 3, 2021. After months of nationwide anti-government protests over corruption, stalled reforms and a stagnating economy in the EU's poorest member state, Bulgarians are gearing up for a parliamentary election in the shadow of the coronavirus pandemic. (AP Photo/Visar Kryeziu)

A pedestrian walks past election poster of Kornelia Ninova in capital Sofia, Bulgaria on Saturday, April 3, 2021. After months of nationwide anti-government protests over corruption, stalled reforms and a stagnating economy in the EU's poorest member state, Bulgarians are gearing up for a parliamentary election in the shadow of the coronavirus pandemic. (AP Photo/Visar Kryeziu)

A pedestrian walks past election poster of Kornelia Ninova in capital Sofia, Bulgaria on Saturday, April 3, 2021. After months of nationwide anti-government protests over corruption, stalled reforms and a stagnating economy in the EU's poorest member state, Bulgarians are gearing up for a parliamentary election in the shadow of the coronavirus pandemic. (AP Photo/Visar Kryeziu)

A cyclist passes by election poster of two rival parties in capital Sofia, Bulgaria on Saturday, April 3, 2021. After months of nationwide anti-government protests over corruption, stalled reforms and a stagnating economy in the EU's poorest member state, Bulgarians are gearing up for a parliamentary election in the shadow of the coronavirus pandemic. (AP Photo/Visar Kryeziu)

An activist fixes a torn up poster of ruling GERB party in Sofia, Bulgaria, Wednesday, March 31, 2021. After months of nationwide anti-government protests over corruption, stalled reforms and a stagnating economy in the EU's poorest member state, Bulgarians are gearing up for a parliamentary election overshadowed by a deadly pandemic. (AP Photo/Valentina Petrova)

A woman passes by a poster depicting Bulgarian prime minister Boyko Borissov, in Sofia, Bulgaria, Wednesday, March 31, 2021. After months of nationwide anti-government protests over corruption, stalled reforms and a stagnating economy in the EU's poorest member state, Bulgarians are gearing up for a parliamentary election overshadowed by a deadly pandemic. (AP Photo/Valentina Petrova)

Pins hold together a poster carrying the signature of Bulgarian prime minister Boyko Borissov in Sofia, Bulgaria, Wednesday, March 31, 2021. After months of nationwide anti-government protests over corruption, stalled reforms and a stagnating economy in the EU's poorest member state, Bulgarians are gearing up for a parliamentary election overshadowed by a deadly pandemic. (AP Photo/Valentina Petrova)

A woman passes by a poster depicting Bulgarian prime minister Boyko Borissov, in Sofia, Bulgaria, Wednesday, March 31, 2021. After months of nationwide anti-government protests over corruption, stalled reforms and a stagnating economy in the EU's poorest member state, Bulgarians are gearing up for a parliamentary election overshadowed by a deadly pandemic. (AP Photo/Valentina Petrova)

A woman walks by a poster of Bulgarian Socialists' Party leader Kornelia Ninova in Sofia, Bulgaria, Wednesday, March 31, 2021. After months of nationwide anti-government protests over corruption, stalled reforms and a stagnating economy in the EU's poorest member state, Bulgarians are gearing up for a parliamentary election overshadowed by a deadly pandemic. (AP Photo/Valentina Petrova)

People enjoy the sunny weather, in Sofia, Bulgaria, Wednesday, March 31, 2021. After months of nationwide anti-government protests over corruption, stalled reforms and a stagnating economy in the EU's poorest member state, Bulgarians are gearing up for a parliamentary election overshadowed by a deadly pandemic. (AP Photo/Valentina Petrova)

A man walks by a poster of Bulgarian Socialists' Party leader Kornelia Ninova in Sofia, Bulgaria, Wednesday, March 31, 2021. After months of nationwide anti-government protests over corruption, stalled reforms and a stagnating economy in the EU's poorest member state, Bulgarians are gearing up for a parliamentary election overshadowed by a deadly pandemic. (AP Photo/Valentina Petrova)

A man draws on poster of Bulgarian prime minister Boyko Borissov in Sofia, Bulgaria, Wednesday, March 31, 2021. After months of nationwide anti-government protests over corruption, stalled reforms and a stagnating economy in the EU's poorest member state, Bulgarians are gearing up for a parliamentary election overshadowed by a deadly pandemic. (AP Photo/Valentina Petrova)