Morning Extra - Why is Gordon Brown so unpopular?

The Prime Minister doesn't have to look too far to find his critics these days: thirteen of his party's MPs have made public calls for a leadership contest to take place. Following the resignation of the Scotland Office Minister David Cairns yesterday, the former government minister George Howarth has said Gordon Brown is the most unpopular prime minister since wartime leader Neville Chamberlain. But what is it about Mr Brown that people don't like? Does Labour need a clear out at the top? And who would make a better leader? Graham Stewart takes your calls, texts and emails.