"I haven't made any decisions yet," Noem said Thursday, according to the Argus Leader of Sioux Falls, South Dakota. "We've been pretty busy out here and have a lot of things on our plate. I believe that there's still time to consider political futures but right now I'm still focused on policy."

In late March, Johnson announced that he would not run for reelection in 2014.

If Noem did jump into the race for Johnson's seat, she would be competing with at least one Republican: former South Dakota Gov. Mike Rounds, who is already running for Johnson's seat.

Noem said she felt she still has plenty of time to decide whether to run because the primary election is in June 2014.

"I believe I’ve got time yet here to consider that and make a decision," Noem said.