Hampstead and Kilburn was the country's most tightly contested constituency in 2010, with Labour's Glenda Jackson sneaking back into Parliament with a bum-squeaky 42 vote majority. A classic three-way race between Labour, the Conservatives and Lib Dems, this year it may be less fraught (our view is that the Lib Dem vote will drop away and Labour will probably have an easier time of it).
Photographers Orlando Gili and Joseph Fox wanted to get to know the people who'll be deciding which MP represents this bit of London. Every day of the election campaign they'll be uploading portraits of two residents to their Marginal Streets website — one from Hampstead, one from Kilburn — and a snapshot of what those people are thinking politically. Polls can be cold things, we like this human insight into how one constituency is shaped by the issues of the day.