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CARDIFF, UNITED KINGDOM - JUNE 09: Ballot papers are counted at the Sport Wales National Centre on June 9, 2017 in Cardiff, United Kingdom. After a snap election was called, the United Kingdom went to the polls yesterday following a closely fought election. The results from across the country are being counted and an overall result is expected in the early hours. (Photo by Matthew Horwood/Getty Images)

CARDIFF, UNITED KINGDOM - JUNE 09: Ballot papers are counted at the Sport Wales National Centre on June 9, 2017 in Cardiff, United Kingdom. After a snap election was called, the United Kingdom went to the polls yesterday following a closely fought election. The results from across the country are being counted and an overall result is expected in the early hours. (Photo by Matthew Horwood/Getty Images)

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CARDIFF, WALES - MAY 05: An official distributes ballot papers during the National Assembly for Wales election count at the Sport Wales National Centre on May 05, 2016 in Cardiff, Wales. Today the UK went to the polls to vote for assembly members, councillors, mayors and police commissioners. (Photo by Matthew Horwood/Getty Images)

CARDIFF, WALES - MAY 05: An official distributes ballot papers during the National Assembly for Wales election count at the Sport Wales National Centre on May 05, 2016 in Cardiff, Wales. Today the UK went to the polls to vote for assembly members, councillors, mayors and police commissioners.  (Photo by Matthew Horwood/Getty Images)

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CARDIFF, UNITED KINGDOM - JUNE 09: Jo Stevens (C) wins Cardiff Central for Labour increasing her majority to more than 17,000 at the Sport Wales National Centre on June 9, 2017 in Cardiff, United Kingdom. After a snap election was called, the United Kingdom went to the polls yesterday following a closely fought election. The results from across the country are being counted and an overall result is expected in the early hours. (Photo by Matthew Horwood/Getty Images)

CARDIFF, UNITED KINGDOM - JUNE 09: Jo Stevens (C) wins Cardiff Central for Labour increasing her majority to more than 17,000 at the Sport Wales National Centre on June 9, 2017 in Cardiff, United Kingdom. After a snap election was called, the United Kingdom went to the polls yesterday following a closely fought election. The results from across the country are being counted and an overall result is expected in the early hours. (Photo by Matthew Horwood/Getty Images)

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CARDIFF, WALES - MAY 04: A man carries a box of ballot papers at Llanishen Leisure Centre on May 4, 2017 in Cardiff, Wales. A total of 4,851 council seats are up for grabs in 88 councils in England, Scotland and Wales. The poll is taking place five weeks before the UK general election on 8 June. (Photo by Matthew Horwood/Getty Images)

CARDIFF, WALES - MAY 04: A man carries a box of ballot papers at Llanishen Leisure Centre on May 4, 2017 in Cardiff, Wales. A total of 4,851 council seats are up for grabs in 88 councils in England, Scotland and Wales. The poll is taking place five weeks before the UK general election on 8 June.  (Photo by Matthew Horwood/Getty Images)

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CARDIFF, UNITED KINGDOM - JUNE 08: Ballot papers are counted at City Hall on June 8, 2017 in Cardiff, United Kingdom. After a snap election was called, the United Kingdom went to the polls yesterday following a closely fought election. The results from across the country are being counted and an overall result is expected in the early hours. (Photo by Matthew Horwood/Getty Images)

CARDIFF, UNITED KINGDOM - JUNE 08: Ballot papers are counted at City Hall on June 8, 2017 in Cardiff, United Kingdom.  After a snap election was called, the United Kingdom went to the polls yesterday following a closely fought election. The results from across the country are being counted and an overall result is expected in the early hours. (Photo by Matthew Horwood/Getty Images)