Well it could be argued (not just for Glassgow East) that because Labour usually seem very keen to give away money to people who dont want to work it is usually in their interest to keep Labour in power.
For example, it was announced recently that 100,000 people claim incapacity benefit because their drug dependancy and alcohol dependancy stops them working.
http://www.telegraph.co.uk/news/uknews/1531201 /100,000-drug-addicts-and-alcoholics-on-benefi ts.html
So we are paying that many people to sit at home all day and do nothing but get pi55ed or drugged. And they get MORE money than those on Jobseekers allowance.
All these scroungers and layabouts have had a great time of it in the last 10 years because Labour have been very keen to give away money to those that dont earn it or deserve it, while taxing up to the hilt those that work.
So of course those people on benefits are going to vote for any party that allows them to sit on their backsides all day doing nothing, getting handouts from the state.
If they think Labour may take their money away (fat chance) then they will vote for someone else.