(CNN) – Political 'troublemaker' Christine O'Donnell revealed she will back former Massachusetts Gov. Mitt Romney for president Tuesday and touted his "executive experience and consistency" in an interview Wednesday morning, where she also took aim at Romney's rival for the GOP nomination.
O'Donnell told CNN "American Morning" anchor Carol Costello that she'd "thought a lot" about her decision and hoped her endorsement will cause others to give Romney a "second look."
Romney has been criticized by conservatives for reversing position on critical issues, but for O'Donnell, "he's been consistent since he changed his mind."
"(Romney's) humble enough to say 'I don't always have the right answers,' and he's open to other viewpoints, and if it doesn't betray his core convictions, he'll make the necessary changes," she said.
The unsuccessful Delaware U.S. senate candidate and tea party movement supporter balked at behavior of fellow tea party enthusiasts saying she didn't believe Gingrich should receive backing from the tea party .
"People are trying to paint Newt Gingrich as the anti-establishment candidate, which I think is funny," O'Donnell said.
"So many tea partiers are flocking behind Newt Gingrich, I decided to come out at say…the tea party I don't think should be behind Newt at all."
O'Donnell accused Gingrich of being "inconsistent and unreliable"-criticism similar to Romney's Tuesday slam of his GOP rival that declared Gingrich an "unreliable conservative."
But, she asserted, "I'm making my endorsement as personal. As Christine O'Donnell."
"Not on behalf of the tea party," she said.
In 2010, thanks to backing from the tea party movement, O'Donnell upset Rep. Mike Castle, a former governor and the GOP establishment pick, for the Republican Senate nomination in Delaware. O'Donnell subsequently lost the general election contest by double digits to Democratic candidate Chris Coons.
She released a book detailing the events of her Senate bid titled "Troublemaker" in August.