(CNN) - Michele Bachmann, the only woman running for the Republican presidential nomination, questioned Monday whether sexism was a factor in the amount of questions she receives at debates.
"Sometimes you wonder about that," Bachmann said in an interview on NBC's "Today" with Kathie Lee Gifford and Hoda Kotb. "I have no way of knowing."
Programming note: GOP presidential candidates face off at 8 p.m. ET Tuesday, November 22, in the CNN Republican National Security Debate in Washington, D.C.
After the last presidential debate, held in South Carolina on Nov. 12 and co-sponsored by CBS and National Journal, Bachmann cried media bias and blasted out an email chain that showed CBS News political director John Dickerson expected Bachmann to receive fewer questions than other candidates.
"I don't know if it's because I'm a woman. I have no idea. I know they deliberately chose not to do it," Bachmann said.
In response, CBS News said Bachmann stood at 4% in national polls at the time and the amount of questions she received fairly reflected her standing in the GOP horserace.
The Minnesota congresswoman frequently touts being the first woman to win the closely-watched Ames straw poll in Iowa, which measures organizational strength in the state that holds the nation's first presidential contest.
But after Texas Gov. Rick Perry jumped in the race in August and candidates such as Herman Cain and Newt Gingrich have surged to the top tier, Bachmann's numbers have dropped to the mid-single digits in most national polls.
Bachmann will take the stage again Tuesday night along with seven other candidates in the CNN Republican National Security Debate in Washington, D.C.
"It's unusual to have a woman candidate. We've never had a woman on the Republican ticket running for president at this level before," Bachmann said. "So I think it's time to let a woman speak."