Dent represents a slightly left-of-center district located in the state's Lehigh Valley region - roughly halfway between Philadelphia and Scranton. But crafting a centrist voting record has helped him stave off serious challenges, including last year's crushing defeat of Democratic challenger John Callahan.
He was 168th most conservative lawmaker in last year's legislative session, according to National Journal's rankings, and was one of the few Republicans who had a more liberal record than at least one Democrat.
"I think you're going to see a real grassroots push to shore up and encourage any congressional Republican that's thinking about supporting the Obama Budget," said a conservative consultant familiar with the project. "Spending is still the issue at the grassroots. Will they stand with the President or House Conservatives?"
Notably, the ad is not confrontational in tone, opting to "encourage" Dent to vote with conservatives instead of criticizing him.