Weiner puts it back in his pants as his lead peters out. --- The mayorâs race â once Christine Quinnâs to lose â has turned into a virtual dead heat among three contenders, according to a poll released yesterday. After leading the pack at 37 percent in February, Quinn has dropped steadily to 19 percent in the latest Quinnipiac University survey, with Anthony Weiner and Bill Thompson hot on her trail at 17 percent and 16 percent, respectively. Public Advocate Bill de Blasio held steady at 10 percent and Comptroller John Liu, dogged by a federal investigation into his campaign finances, was struggling at 7 percent. A May 22 Quinnipiac poll had Quinn with 25 percent, Weiner with 15 percent, and Thompson at 10 percent. http://www.nypost.com/p/news/local/mayoral_draw_poll_ZswF0xewhlGajcrkK9dtNJ