I'm not surprised it came to this after years of tensions in the area. I had always felt that Woolas had done a good job in tough circumstances. Now though I'm incredibly disappointed that Labour's name might be put to anything that could end up being described as nasty as this.
What happens now? Any one of the three main parties could win the seat. A backlash against Labour is possible but not automatic. The Lib Dems have been second there for several elections but are hitting rock bottom in the polls. The Tories haven't held the seat for fifteen years but could be in with a shout. The constituency is an odd mix of traditional Labour working class terraced housing and much wealthier country homes. If Labour loses the re-run it would be a dreadful shame for the party and activists who worked so hard to keep it Labour, but not a surprise after this.