In 2000, Skinner denounced former ally Ken Livingstone, then serving as a Labour MP. Livingstone had failed to win the party's nomination to be a candidate for Mayor of London, and had then decided to run as an independent candidate instead, urging his supporters to help Green Party candidates get elected. Skinner said that Livingstone had betrayed Labour Party activists in his Brent East constituency, whom he described as having fought for him "like tigers" when his majority had been small: "He tells them he's going to be the Labour candidate, then he lies to them. To me that's as low as you can get". He contrasted Livingstone with the official Labour candidate, Frank Dobson, saying that Dobson was "a bloke and a half... not a prima donna ... not someone with an ego as big as a house". Skinner said Livingstone would "hit the headlines, but you'll never be able to trust him because he's broken his pledge and his loyalty to his party. The personality cult of the ego does not work down a coal mine and it does not work in the Labour Party".