Until the results start flooding in from around the North West from about 02:30, let's give you a taste of the key seats up for grabs...

Labour won the seat in 2010 with a majority of just 96, so the Conservatives have been campaigning hard in Bolton West.

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Despite being home to Bolton Wanderers Football Club, the seat includes little territory actually situated within Bolton. Instead its area covers the suburban and rural land between Bolton and Wigan, and is home to commuters who work in Manchester.

The local economy has attracted a great deal of inward investment - the Middlebrook Retail and Leisure Park includes a 12-screen cinema, bowling alley, arena and Macron Stadium, as well as a variety of shops.

This is the most affluent of the Bolton seats, 72.4% are homeowners - one in six of the population is a pensioner, according to ONS 2011 Census figures.