The Democratic National Committee will begin airing a TV ad tomorrow promoting the need for health care reform and slamming Republicans for attempting to block progress.

"What's the cost of not reforming health care? Premiums rising faster than your paycheck," the announcer says. "But some leading Republicans, playing politics, have vowed to kill reform. Tell Republicans the cost of doing nothing on health care is just too high."

The ad comes as Democrats appear unlikely to get bills passed in either chamber of Congress before leaving town for a month. Speaker Pelosi indicated today that she's "not afraid of" waiting until after the August recess to complete a bill, and Senate Majority Leader Harry Reid announced that's exactly what the Senate will do.

The 30-second ad will air on national and D.C. cable stations for the next two-and-a-half weeks.