A new third-party ad for Barack Obama could be considered something of a test-run for Obama's message that he can appeal to independent voters and crossover Republicans with his message of political change and withdrawal from Iraq.

MoveOn, the group known for being a voice of anti-war liberals, is now aiming for the Republican vote in their new spot, featuring an Army veteran and lifelong Republican's endorsement of Obama:

MoveOn is putting $200,000 behind the ad, to air it on national cable TV and in Ohio, Wisconsin, and Colorado.