GLASGOW, SCOTLAND - NOVEMBER 10:  Socialist politician Tommy Sheridan (R), one of two co-convenors of the left-wing Scottish political party Solidarity, speaks to a local while campaigning for the Glasgow North East by-election on November 10, 2009 in Glasgow, Scotland. Candidates are entering their final week of campaigning for the seat made vacant by former Speaker of the House of Commons Michael Martin, who resigned in June due to his role in the MP's expenses row. Getty Images logo Getty Images 27 months ago

GLASGOW, SCOTLAND - NOVEMBER 10: Socialist politician Tommy Sheridan (R), one of two co-convenors of the left-wing Scottish political party Solidarity, speaks to a local while campaigning for the Glasgow North East by-election on November 10, 2009 in Glasgow, Scotland. Candidates are entering their final week of campaigning for the seat made vacant by former Speaker of the House of Commons Michael Martin, who resigned in June due to his role in the MP's expenses row.