CNN

The DSCC is targeting McConnell and three other GOP senators over Iraq.

WASHINGTON (CNN) - The Democratic Senatorial Campaign Committee (DSCC) is hitting the television airwaves for the first time this election cycle to target four potentially vulnerable Republican senators over their past support of the Iraq war.

GOP Sens. Susan Collins of Maine, Norm Coleman of Minnesota, John Sununu of New Hampshire, and Senate Minority Leader Mitch McConnell of Kentucky are the subjects of the new ads, which began airing in their home states Tuesday.

Collins, Sununu, and Coleman have supported the president's policy in Iraq in the past, but have since come out against the troop increase there. McConnell has expressed reservation with the policy but has delayed a final judgment on it until a progress report is released in September.

The ads scroll through several news clips reporting negative news out of Iraq and directly attack each senator specifically for voting to support the war.

“Four times this year Republican senators have had the opportunity to support a new direction in Iraq, and four times they have instead voted for George Bush’s failed status quo,” DSCC spokesman Matthew Miller said in a statement. “This week they have a chance to listen to their constituents and do the right thing for the country. It’s time for Republican senators to stop taking their marching orders from the president and vote to end this war.”

Collins, Sununu, and Coleman are considered to be three of the most vulnerable senators facing reelection in 2008. McConnell may also face a tough reelection fight.

– CNN Ticker Producer Alexander Mooney