Glasgow East byelection: an historic result for the SNP

John Mason, the Scottish National Party candidate, canvases voters at a polling station Photograph: Jeff J Mitchell/Getty

Votes are cast at the Carmyle community centre, Glasgow Photograph: Alan Simpson/PA

Political party activists watch as marked ballot papers arrive to be counted at the Tollcross Park leisure centre Photograph: David Moir/Reuters

The first votes arrive at the Tollcross Park leisure centre Photograph: David Cheskin/PA

Votes are checked after a 42% turnout Photograph: David Cheskin/PA

The counting of the votes at Tollcross Park leisure centre continued until after 2am Photograph: David Cheskin/PA

The SNP candidate, John Mason, smiles as he enters the main hall during the count Photograph: David Moir/Reuters

The Scottish Labour Party candidate, Margaret Curran, looks anxious as she stands with her supporters during the count Photograph: David Moir/Reuters

The SNP's John Mason celebrates as the returning officer announces he has won the Glasgow East seat with 11,277 votes Photograph: David Moir/Reuters

The Labour candidate, Margaret Curran, reacts to her defeat after receiving 10,912 votes, 365 behind the Scottish nationalists Photograph: David Cheskin/PA

Scottish National party supporters celebrate winning Labour's third-safest seat in Scotland Photograph: David Moir/Reuters

Winner John Mason stands behind the defeated Margaret Curran after the results are announced Photograph: Jeff J Mitchell/Getty

John Mason celebrates his victory, achieved by wiping out a Labour majority of more than 13,000 Photograph: Jeff J Mitchell/Getty

John Mason waves a Saltire flag after winning the Glasgow East seat, becoming the SNP's seventh Westminster MP Photograph: Jeff J Mitchell/Getty