By Cameron Joseph - 08/06/13 01:59 PM EDT
Sen. Mark Pryor (D-Ark.) is up with his first ad against Rep. Tom Cotton (R-Ark.), blasting the congressman for his political ambition and voting record as Cotton prepares to jump into the race.
Pryor, considered the most vulnerable Democratic incumbent running for reelection in 2014, attacked Cotton on several issues, including his vote against the farm bill.
"Tom Cotton should be running. Not for higher office, but running from his own record of hurting the people of Arkansas," the ad concludes.
Pryor is one of three Democratic incumbents the GOP hopes to take out in 2014. Republicans need to win six seats to take the Senate's majority, and they believe they have a good chance of winning three open seats.
Pryor's advertisement is running for two days and is timed to coincide with Cotton's jump into the Senate race, scheduled for Tuesday evening.