The most recent poll on the Maine Senate race shows Senator Collins extending her lead to 23 points from the last published poll in November, which showed her ahead of Tom Allen 54-34. The poll also shows Collins with a lead among Union and non-Union households. From Roll Call:

Business Coalition Polls 3 Senate Battlegrounds

In releasing polling Tuesday that sought to bolster its argument that Americans oppose “card-check” legislation for unionized workers, the Coalition for a Democratic Workplace also released polls on three of the most hotly contested Senate races of the cycle.

In Colorado, the Republican polling firm McLaughlin & Associates found Rep. Mark Udall (D) leading former Rep. Bob Schaffer (R), 44 percent to 32 percent. The survey of 400 likely general election voters taken March 6-9 had a 4.9-point margin of error.

In Maine, Sen. Susan Collins (R) had a solid lead over Rep. Tom Allen (D), 54 percent to 31 percent. The poll of 400 likely voters March 6-9 had a 4.9-point error margin.

In Minnesota, Sen. Norm Coleman (R) had a 46 percent to 40 percent lead over comedian Al Franken (D) in the McLaughlin poll. The pollster interviewed 500 likely voters March 6-9. The poll had a 4.5-point error margin.

The poll found in all three states that non-union households were far more likely to support the Republican candidates, and also suggested that voters are less likely to support candidates who favor a card-check process for union membership, a provision favored by unions and many Democratic leaders.

— Josh Kurtz

(cross posted at RedState)