Surrounded by cheering supporters, Florida Governor Charlie Crist announced today at a press conference he was dropping out of the Florida Republican Senate primary race to run as an independent.
"My decision to run for the United States Senate as a candidate without party affiliation in many ways says more about our nation and our state, than it does about me," Crist announced.
"For me it's never been about doing what's easy," he said today, "it's about doing what is right for the people first."
"Unfortunately our our political system is broken," he said. "I haven't supported an idea because it's a Republican idea or it's a Democratic idea, I support ideas that I believe are good ideas for the people."
The primary is not until Aug. 24, but polls showed Crist badly trailing former Florida House Speaker Marco Rubio, a Tea Party favorite.
Republican Senate leaders immediately slammed his decision, demanding Crist return money they donated to his campaign.
"Elections are about trust and frankly, it is unclear whether Governor Crist deserves any," said a joint statement from the National Republican Senatorial Committee. "We plan to put our resources and support behind Marco Rubio."
Crist's pollsters, the Republican polling firm of Public Opinion Strategies, announced today that it is resigning from his campaign.
"Governor Crist's decision has been ceaselessly speculated on in recent weeks. Despite his difficulties in the Republican primary, we were loyally working for him as long as he was a Republican. With his announcement that he is not running as a Republican, we will no longer be involved," said Glen Bolger, a partner in the firm who worked with the Crist campaign.
Many question whether Crist's switch is a warning sign for moderate Republicans across the country running for reelection this year.
But Rubio told ABC News in an exclusive interview today that he thought Crist's move had more to do with political convenience than ideology.
"In fact this has nothing to do with ideas or principles or ideology, it's about quite frankly political convenience. It's about someone who wants to continue his career in politics and doesn't believe he can do that this year within the Republican party," Rubio said.
Watch Terry Moran's day-in-the-life profile of Rubio tonight on ABC's "Nightline," at 11:35 pm ET, or go to www.abcnews.com/nightline.
The move sets up a tight three-way race between Crist, Rubio, and likely Democratic nominee Rep. Kendrick Meeks.
Crist previewed his move a week ago, when he told reporters he was listening to advice to make the switch.
"I think I'll take the advice of people in Florida instead of the advice of people in Washington," Crist told reporters last week. "They try to tell us a lot, and I don't think we need to listen. ... Things change."
Crist was once a rising star of the GOP -- much as his challenger Rubio is now. The Republican Party in turn made him one of the most powerful political figures in Florida, but he's since lost that support.
Many say the cause of the governor's slipping Republican support was Crist's embrace of President Obama -- literally.