General Election 2015: Argyll and Bute

The vast and remote constituency of Argyll and Bute has been held by the Liberal Democrats since 1987. But this time, it will come as no surprise that the SNP is considered to pose a more formidable challenge. The constituency is home to the Trident nuclear weapons system - a 'red line' issue for the SNP who want it scrapped. We visited the towns of Helensburgh and Dunoon to test the mood of voters.