Chafee poised to challenge Hillary Clinton

Looks like Hillary Clinton will have at least one opponent in the 2016 Democratic primaries: Former Rhode Island governor Lincoln Chafee told CNN on Thursday he's ready to jump in.

Asked about his criticism of Clinton, Chafee said: "Yes, that's why I'm running. Because I feel strong about where we're going as a country."

Chafee spokeswoman Debbie Rich later qualified Chafee's statement, telling CNN that the former governor has not yet filed the formal paperwork to seek the Democratic nomination. He announced last week that he was forming an exploratory committee.

"We are still in the exploratory committee phase," Rich told CNN in a phone interview. "We will file the proper papers to be an official candidate, but that has not happened yet."

Chafee, a former U.S. senator and an ex-Republican, again criticized Clinton for voting in 2002 for the authorization to go to war with Iraq while she served in the Senate.

"That was a moment where the premise for going to Iraq was so false that there were weapons of mass destruction, she didn't do her homework. We live with the ramifications," Chafee told CNN's State of the Union over the weekend. "You may say that's 12 years ago -- that's a big motivator for me running. If you show a lack of judgment, lack of doing homework then, what can we expect in the future?"