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Welsh Labour was the party defeated by Leanne Wood in the 2016 Senedd election for Rhondda. Wood, the leader of Plaid Cymru, won the seat with a majority of 1,060 votes, overturning a 1,789-vote majority for Labour in the previous election. This marked the first time that Plaid Cymru had won the Rhondda constituency since its creation in 1918.