A new poll shows Governor Walker with a sizeable lead over his Democratic challenger. The latest Wisconsin Survey from St. Norbert College has Walker leading Democrat Mary Burke, with 56 percent support to Burke's 40 percent. Walker on Wednesday said he's not taking the results for granted. He says he'd rather be ahead than behind, but in the end he anticipates the race will tighten as races have in the past. Another survey in March by Marquette University had Walker leading Burke by a smaller margin, 48% to 41%.