A new poll out Tuesday shows Barack Obama opening a big lead in Wisconsin.
The survey released by Quinnipiac University has Barack Obama with a 17-point lead over John McCain in Wisconsin. However, UW-Madison political scientist Ken Mayer says we shouldn't count McCain out just yet with three weeks to go before Election Day. Mayer says something can always change before then.
Still, Mayer says it will be harder for McCain to catch up as he continues to fall behind.
Pollsters say Wisconsin is one of the few battleground states where Obama has a substantial lead among blue collar voters and Catholics, as well as white men.