LONDON (AP) — An eccentric Conservative lawmaker appeared likely to become London's next mayor after an election that brought only gloom Friday for Prime Minister Gordon Brown and his Labour Party. Brown's first test at the polls Thursday brought Labour its worst local election results in four decades; his credibility has been dented by accusations of dithering and economic blunders since he became leader last June. The party lost more than 300 municipal council seats and the Conservatives made strong gains in its longtime weak spot in northern England. In London, bookmakers and legislators alike predicted former magazine editor Boris...