LIVE BLOG: 2012 Iowa Caucus
11:35 p.m. PT: Mitt Romney has been declared the winner. With 100% of the precincts reporting, Romney won by just 8 votes.
10:40 p.m. PT: And now Santorum leads Romney by 4 votes. CNN says the Iowa Republican Party is still counting the votes from two of the precincts.
10:35 p.m. PT: With 99% of the precincts reporting, Mitt Romney leads Rick Santorum by - get this -one vote! Incredible!
10:25 p.m. PT: According to CNN, the Iowa Republican Party is still waiting for two precincts to report their results.
10:10 p.m. PT: CNN is reporting that Santorum is leading Romney by 18 votes, but votes are still being counted.
9:40 p.m. PT: Santorum has just finished speaking, and now it is Romney's turn at the podium. "We don't know what the final vote tally is going to be," said Romney, congratulating Santorum and saying he thought they were both winners.
9:30 p.m. PT: Latest results show Santorum beating Romney by 5 votes. 99% of the precincts have reported their results.
9:20 p.m. PT: Santorum is currently addressing supporters, proclaims "Game on!"
9:10 p.m. PT: With 97% of the precincts reporting, Santorum holds a slight lead over Romney. The two candidates are separated by about 30 votes.
9:00 p.m. PT: Rick Perry just gave a speech to supporters, where he said he is heading back to Texas to "reassess" his campaign.
8:45 p.m. PT: Santorum continues to hold on to his narrow lead over Romney with 96% of the precincts now reporting their results. A few thousand votes are still expected to come in.
8:35 p.m. PT: With 93% of the precincts reporting, Rick Santorum is ahead of Mitt Romney 24.7% to 24.6%.
8:30 p.m. PT: Fox News reports that, per Iowa Republican Party Chairman Matt Strawn, a winner will be announced tonight.
8:20 p.m. PT: With 92% of the precincts reporting, Romney leads Santorum by just 13 votes.
8:20 p.m. PT: Fourth place finisher Newt Gingrich is now addressing his supporters in Iowa, tells them goal is "to replace Barack Obama and get America back on track."
8:15 p.m. PT: The New York Times has a rundown of where the candidates are headed next: Romney, Paul, Gingrich and Santorum are headed to New Hampshire, while Perry and Bachmann will head to South Carolina.
8:10 p.m. PT: With 89% of the precincts reporting, Mitt Romney has a narrow leads Santorum 24.7% to 24.6%.
8:05 p.m. PT: Fox News is projecting that Ron Paul will finish third in Iowa.
8:05 p.m. PT: Ron Paul, running third in the caucus, is now addressing his supporters.
7:50 p.m. PT: Santorum regains lead over Romney with 88% of the precincts reporting. The candidates are separated by less than 50. We're definitely headed towards an exciting finish!
7:45 p.m. PT: With 75% of the precincts reporting, CNN reports Mitt Romney leads Rick Santorum by about 500 votes. Both are polling around 25%.
7:40 p.m. PT: Rick Santorum's lead over Mitt Romney is growing. With 54% of the precincts reporting, Santorum is beating Romney by 24.2% to 23.5%. The two are separated by about 400 votes.
7:35 p.m. PT: According to entrance polls, Rick Santorum's vote total is being bolstered by Tea Party supporters and religious conservatives, the Associated Press reports. Romney is doing well among voters looking for a candidate to defeat President Obama in the general election, while Paul receives strong support from Indepdents, young voters and those concerned about the federal deficit.
7:30 p.m. PT: Fox News is projecting the bottom of the race: Bachmann 6th, Perry 5th and Gingrich 4th.
7:15 p.m. PT: Those who wondered whether Rick Santorum's sudden rise in Iowa was a fluke can stop wondering: tonight's results show Santorum's Iowa campaign is for real. With 48% of the precincts reporting, Santorum (24.3%) continues to lead Romney (23.7%). Santorum leads by roughly 300 votes. Regardless of whether he actually wins tonight, Santorum's campaign - which, as of about a week ago, was all but written off - might emerge as the biggest winner out of the Iowa caucuses.
7:10 p.m. PT: Per NBC News' Chuck Todd: "It now appears we will NOT be able to call the race. One of those rare occasions where we have to wait for all votes to be counted."
7:05 p.m. PT: And the lead has changed yet again! With 46% of the precincts reporting, Santorum (24.3%) is narrowly leading Romney (23.8%). Paul (21.8%) is third, though his numbers appear to be fading somewhat.
7:00 p.m. PT: Parts of Western Iowa has been slow to report results, which could favor Santorum down the home stretch. From Nate Silver: "About half the counties west of Des Moines have yet to report any results, a potentially good sign for Rick Santorum, since he has led the vote in most of western Iowa so far. Southern Iowa, where Ron Paul is running well, has also been slow to report results."
6:55 p.m. PT: With 31% of the precincts reporting, the race in Iowa is still much too close to call. Romney (23.4%) continues to lead (Santorum (23.0%) and Paul (22.8%).
6:40 p.m. PT: The New York Times' Nate Silver wonders if this will be the closest caucus ever. From Silver: "With fewer than 300 votes separating first-place Ron Paul from third-place Mitt Romney in votes counted so far, it should go without saying that we may be headed for a photo finish."
6:35 p.m. PT: With 26% of the precincts reporting, Romney (23.1%) is now leading Santorum (23%) and Paul (22.9%). Newt Gingrich is fourth (13.2%), Rick Perry is fifth (10.3%) and Michele Bachmann is sixth (5.8%).
6:30 p.m. PT: We have a new leader! With 24% of the precincts reporting, Rick Santorum (23.2%) narrowly leads Mitt Romney (23.2%) and Ron Paul (23%). According to The New York Times, Santorum and Romney are seperated by just 7 votes!
6:25 p.m. PT: With 18% of the precincts reporting, Paul (24.2%) continues to lead, while Santorum (23.2%) is now second and Romney (22.6%) has fallen to third.
6:15 p.m. PT: With 16% of the precincts reporting, the top three are Paul (24.1%), Romney (23.%) and Santorum (22.9%).
11:00 a.m. PT: According to the latest Des Moines Register poll, Mitt Romney is the favorite to win Iowa heading into tonight's caucuses. The poll shows that 24 percent of the caucus-goers favor Romney as their first choice. Right behind Romney is Ron Paul at 22 percent, while Rick Santorum finished third in the poll with 15 percent. Only 7 percent of Iowa caucus-goers are undecided.
Related Content: Politics Today: The Iowa Caucus 2012 Edition
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