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Pictured: Sarah Brown, wife of Gordon

The One Show's Gyles Brandreth has been looking at the power of women to make or break their men's political careers.

Over the years, British voters have been less keen on spouses taking such a prominent role, but lately this has begun to change.The leaders' wives are now well and truly in the front line.

So, do men in politics need the backing of a woman to succeed? What kind of woman should she be?