San Francisco Mayor Gavin Newsom's re-election campaign manager resigned Wednesday after confronting the mayor about an affair Newsom had with his wife while she worked in the mayor's office, City Hall sources said. Alex Tourk, 39, who served as Newsom's deputy chief of staff before becoming his campaign manager in September, confronted the mayor after his wife, Ruby Rippey-Tourk, told him of the affair as part of a rehabilitation program she had been undergoing for substance abuse, said the sources, who had direct knowledge of Wednesday's meeting. Rippey-Tourk, 34, was the mayor's appointments secretary from the start of his administration...