From Eric Dondero:

Strident AntiWar Leftist Democrat Senator Russ Feingold of Wisconsin now looks to be in serious trouble. A new poll by Rasmussen finds him behind former Bush Administration official and former Wisconsin Gov. Tommy Thompson. As of yet, Thompson has not declared for the seat.

From Rasmussen:

A new Rasmussen Reports telephone survey of likely voters in Wisconsin finds Republican Tommy Thompson edging incumbent Russ Feingold 47% to 43% in a hypothetical U.S. Senate match-up. Five percent (5%) like some other candidate, and four percent (4%) are undecided.

Any incumbent who attracts less than 50% support at this point in a campaign is considered potentially vulnerable.

Thompson was a staunch advocate of the War on Terror and supported both the Wars in Afghanistan and Iraq. Feingold opposed both.

The communist-leaning Nation magazine has called Feingold a "progressive icon." They described his foreign policy stance:

the senator who cast a lonely vote against the Patriot Act in 2001, proposed the first timeline for bringing the troops home from Iraq and sought to censure President Bush over the warrantless wiretapping program...

Of note, Tommy Thompson is the brother of Libertarian-Republican (member of both the Libertarian Party and Republican Party) Ed Thompson, Mayor of Tomah, and current GOP candidate for WI State Senate. Ironically, if the elder Thompson declares, the brother duo of like mind, will appear on the same ballot for two different offices in some Wisconsin locations.

Clarification: Of course The Nation in their piece quoted above, left out "Warrantless wiretapping program" of suspected Islamic Terrorists.