BBC News Published A year ago this weekend Labour's "red wall" across the north of England crumbled. In Yorkshire and Lincolnshire the Conservatives turned 10 previously red seats blue, as Labour slipped to its worst election defeat since 1935. Among the constituencies to change hands were seats that had not returned a Tory MP since their creation more than 100 years ago. Now, 12 months on, voters and politicians have been reflecting on the events of 12 December 2019. The voter image captionMark Roberts voted for the Conservatives for the first time in 2019 Mark Roberts, from Wakefield, voted Conservative for the first time in 2019, helping Imran Ahmad-Khan topple Mary Creagh in a seat held by Labour since the 1930s.