A new Wisconsin Public Radio/St. Norbert College survey:

Of the participants who said they would vote for a Democrat, 43 percent said they would be most likely to vote for U.S. Sen. Hillary Clinton, D-N.Y., with Sen. Barack Obama, D-Ill., at 25 percent and former Sen. John Edwards, D-N.C., at 15 percent.

The same question for Republican respondents showed former New York City Mayor Rudy Giuliani at 32 percent , former Sen. Fred Thompson, R-Tenn., at 14 percent and Sen. John McCain, R-Ariz., with 13 percent.