The Republican National Committee is launching radio ads in the districts of the four Blue Dog Democrats who helped the House Energy and Commerce Committee approve the health care reform bill.

The four targeted Democrats are Reps. Bart Gordon (TN-06), Zack Space (OH-18), Baron Hill (IN-09) and Mike Ross (AR-04). Click on the districts to hear the ads.

The district-specific ads say the Democrat "folded like a lawn chair" and say about the health care bill: "It's big government. It's big money. And it'll hit you where it hurts." Listeners are asked to call their Member of Congress and "tell him to stop voting with Nancy Pelosi."

Democrats are running ads in GOP districts blaming Republicans for doing just the opposite -- working to halt the health care reform bill. The Democratic Congressional Campaign Committee is targeting more than two dozen House Republicans with radio ads, automated calls and other tactics.