The outcome of this year's General Election is perhaps the most difficult to predict in history. But that's not the case in every constituency. In three quarters of seats in London the majorities are so large they appear out of reach. That doesn't mean they're worth disregarding.
In the second of our series of 10 constituencies to watch we went to Holborn & St Pancras, where Labour's large lead from 2010 looks unbeatable. But, the battle there brings together two key characters on the capital's political scene.
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