Rep. Joe Sestak, a retired Navy Admiral, is running for the Democratic nomination in the Pennsylvania Senate race. With the primary just three weeks away, Sestak finds himself down in the polls against incumbent Arlen Specter, who switched from the Republican Party a year ago.

In a new TV ad, veterans speak out in defense of Sestak's military record, which was questioned in a recent Specter ad.

The 30-second Sestak ad goes on the air today.

--------------------------------------------
Follow the RCP Blog on Twitter.
Become a fan of RCP on Facebook.
--------------------------------------------