Ribble Valley
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Election 2015: Profile of Ribble Valley in Lancashire

Lancashire's Ribble Valley constituency was won by Nigel Evans for the Conservatives in 2010 with a massive majority.

While the Tories will be confident of retaining it on 7 May, experienced election observers will remember that they lost the seat in a 1991 by-election.

Could it happen again? BBC Radio Lancashire's Mike West reports.