(AP) HOUSTON -- Houston's openly gay city controller has pulled ahead in the race to be mayor of the nation's fourth largest city, just two days before a runoff election, according to a new poll. <img src=http://images.huffingtonpost.com/gen/125741/thumbs/s-PARKER-large.jpg> http://www.google.com/hostednews/ap/article/ALeqM5ijRd6gh_FQ2pQU531ysucBuQ_SjgD9CHSHR02