Thad Cochran in Politico.com

On Principles & Values: First elected in 1978; still undecided about 2014 retirement

Cochran, 75, has not said whether he will run for a seventh term next year. He has picked up his fundraising some. Cochran, who won his seat in 1978, mingled with about 70 donors at a reception this week at the National Republican Senatorial Committee headquarters, and a source in the room said he "seemed like he was running." He suggested this summer that it might take months before he shares his plans. Asked about the attacks, Cochran's spokesman emailed: "Senator Cochran has indicated that he will determine his plans regarding the 2014 election cycle later this year."