North Carolina House Speaker Thom Tillis (R), who is widely expected to run against Sen. Kay Hagan (D-N.C.), won't announce his decision until June.

"It's something I'll deal with after June," Tillis told the Charlotte News & Observer when asked about his potential bid, ruling out an official decision until after the State Legislature adjourns.

"You can't not think about what you are going to do, because I term-limited myself," he said. "It would be disingenuous to say you are not thinking about what you do, but there is a lot of opportunity out there that [is] just not political, professional opportunities and other things."

Tillis has been widely expected to run for months, and traveled the state extensively while campaigning for other candidates in 2012.