(CBS News) Former House Speaker Newt Gingrich on Wednesday suspended his campaign for the Republican presidential nomination, saying, "today I am suspending the campaign, but suspending the campaign does not mean suspending citizenship."
Gingrich deemed the campaign "a truly wild ride" during an appearance in Arlington, Virginia, saying, "I could never have predicted either the low points or the high points."
Quoting an observer who suggested that his best days may be ahead, Gingrich vowed to focus on balancing the budget, advocating for "religious liberty" and social security savings accounts and working for American energy independence. He also said he would work to "reemphasize the work ethic" in America, advocate for his national security positions and press for increased brain research.
Gingrich also stood behind his campaign push for a moon colony, though he acknowledged that it was "probably not my most clever comment in this campaign." He said that despite having providing fodder for "Saturday Night Live" by pushing for the moon colony, he believed that the proposal was sound, arguing that Americans should seek to "go out and pursue great adventure."
Despite at one point predicting that he was the likely GOP presidential nominee, Gingrich ultimately won just two primary contests - in South Carolina and his home state of Georgia. Throughout the campaign, he complained bitterly that Mitt Romney and the super PAC backing Romney were using their massive fundraising advantage to essentially buy the election.
It was one of many harsh criticisms Gingrich made of Romney during the campaign. Gingrich called Romney a liar adept only at "managing the decay" who "looted companies" during his business career, "leaving behind broken families and broken neighborhoods."
Gingrich, who said during the campaign that Romney was not a true conservative, said that Romney should be considered conservative in comparison to President Obama.
"This is not a choice between Mitt Romney and Ronald Reagan, this is a choice between Mitt Romney and the most radical leftist president in American history," he said. Gingrich pointed to the judges that would be appointed by each candidate in arguing -- relatively tepidly -- for his former bitter rival.
Gingrich's comments are already finding their way into attack ads from the Obama campaign, which put out a video Wednesday morning featuring a number of the former House speaker's attacks on Romney. On Tuesday, the Obama campaign released a television ad that followed Gingrich in spotlighting Romney's "Swiss bank account."
Gingrich stumbled out of the gate in his presidential run last May, taking heat from many in his party for deeming Paul Ryan's controversial House budget "right-wing social engineering." In June, his staffers resigned en masse, complaining of a lack of direction and seriousness on the part of the candidate.
But driven by a string of strong debate performances featuring attacks on the media, Gingrich rose to the top of the polls in November. After again being written off following disappointing finishes in the early states, he scored a convincing January 21 victory in South Carolina, a state that has traditionally picked GOP nominees.
But Gingrich faltered in the debates after South Carolina, and Romney beat him soundly in Florida. Gingrich was unable to recapture his momentum, and many in the GOP feel he stayed in the race longer than he should have, potentially damaging his brand and earning power. In addition to his campaign activities, he is expected to go back to writing books, giving paid speeches and possibly rebuild his consulting businesses in the coming months.
By suspending his campaign, Gingrich can continue to raise money to pay down the millions of dollars he has accrued in campaign debt. The former House speaker has indicated that Romney has agreed to help him retire the debt.
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