Pryor's attack on Rep. Tom Cotton (R-AR), the likely Republican nominee, is based on Cotton's support for a Republican Study Committee budget proposal to turn Medicare into a voucher system and raise the age for access to Medicare to 70.
Pryor has made Medicare and Social Security trending topics in his campaign. He's repeatedly hit Cotton for supporting changes to the social programs.
"When I look at Republicans, especially on the House side, what I see is a group of House members that are persistent in trying to … undermine the integrity of Medicare and Social Security," Pryor said Friday during a speech to optometrists in Arkansas.
Pryor's campaign is spending six figures on the ad, which will air on cable and broadcast television across Arkansas.
Watch the ad below: