With Both Palin and Christie Out, a Look at Who's In -- PICTURES

OUT: Sarah Palin
Palin announced Wednesday that she's not running for president in 2012.

PHOTO: STEPHAN SAVOIA/AP

OUT: Chris Christie
The New Jersey governor is expected to announce at a press conference on Tuesday that he will not run for president. Despite repeatedly claiming that he did not want to run, Christie gained a lot of attention after speaking at the Reagan Library in September.

PHOTO: JAE C. HONG/AP PHOTO

IN: Rick Perry
The longtime Texas governor formally announced he was running for president on Aug. 13. He was immediately viewed as a front-runner of the GOP field, but has since cooled off among Republican voters.

PHOTO: CHET SUSSLIN

IN: Buddy Roemer
Former Louisiana Gov. Buddy Roemer officially launched his presidential bid on July 21 in New Hampshire. During a speech at Dartmouth College, Roemer described his campaign as a war against the special interests that control Washington, The Daily Advertiser reported. "I run to reveal and challenge the control of the special interests over our nation's capital and demonstrate the freedom to lead that can only come from refusing their money."

PHOTO: GERALD HERBERT/AP

OUT: Tim Pawlenty
After a disappointing third-place showing in the Iowa Straw Poll in August, former Minnesota governor Tim Pawlenty dropped out of the primary race. "For me, what I thought I brought forward was a rational, established, credible, strong record of results based on experience of a two-term governor in a blue state," Pawlenty said. "But the audience, so to speak, was looking for something different.”

PHOTO: Chet Susslin

IN: Jon Huntsman
"I'm a candidate for the office of president of the United States of America," Huntsman told supporters on June 21 at Liberty State Park in New Jersey. Initial political moves indicate Huntsman, a former Utah governor who served as President Obama's ambassador to China, is aiming to build a centrist coalition.
VIDEO: For Huntsman in 2012, His Weakness Is Also His Strength

PHOTO: AP IMAGES

IN: Michelle Bachmann
At the CNN-broadcast Republican debate on June 13, Rep. Michele Bachmann, R-Minn., stole the spotlight by making her presidential candidacy official onstage as the rest of the field looked on. Two weeks later, she formally kicked off her campaign in Waterloo, Iowa—her birthplace and the heart of the caucus state where she is expected to bet most of her campaign chips. Bachmann told the crowd that "We can win in 2012, and we will."
VIDEO: Bachmann Announces Presidential Bid

PHOTO: CHARLES DHARAPAK/AP

OUT: Thaddeus McCotter
Rep. Thaddeus McCotter, R-Mich., filed paperwork for a presidential run on July 1 and announced his bid at a Fourth of July in Michigan a day later. The campaign was short-lived, though—he dropped out on Sept. 22 and endorsed Mitt Romney. "If they keep you out of the debates, you are out of the conversation, and you can't run. It was sort of death by media," he said.

PHOTO: AP/WILLIAM B. PLOWMAN for L.A. CHAMBER OF COMMERCE

IN: Rick Santorum
Former Sen. Rick Santorum of Pennsylvania officially announced his plans to run for president on ABC's Good Morning America on June 6. "We're in it to win and very excited about what the future holds," Santorum said. "We've got a great team, and in the early-primary states we've got a lot of momentum."
VIDEO: Santorum's Path

PHOTO: JIM COLE/AP PHOTO

IN: Mitt Romney
The former governor of Massachusetts made his bid official on June 2 at Bittersweet Farm in Stratham, N.H. He criticized President Obama for failing to bring about an economic recovery during three years in office and pledged to make jobs a priority. Romney announced on April 11 that he was forming an exploratory committee.
VIDEO: Romney's on Top ... For Now

PHOTO: ANDREA SAUL/ ROMNEY FOR PRESIDENT

IN: Herman Cain
The former CEO of Godfather's Pizza formally launched a campaign for the Republican presidential nomination on May 21. Cain has never held political office, but he has been happy to step into the arena to blast news of his presidential aspirations.
VIDEO: It's Always Sunny for Herman Cain

PHOTO: RICHARD A. BLOOM

IN: Ron Paul
Rep. Ron Paul, R-Texas, announced on May 13 on Good Morning America that he's in. This is the folksy libertarian's third run at the White House, the first being in 1988. Now 75, Paul espouses a platform of fiscal conservatism and limited government that may carry a heavier weight with voters.
VIDEO: Ron Paul on GMA: I'm Running

PHOTO: CHRIS O'MEARA/AP

IN: Newt Gingrich
On May 11, Gingrich tweeted: "I am announcing my candidacy for president of the United States." The former House speaker became the first contender with GOP leadership credentials to make an official move toward the presidency when he announced on March 1 that he was forming an exploratory committee.
VIDEO: N2K: Where's Gingrich's Base?

PHOTO: CHET SUSSLIN

IN: Gary Johnson
"First time to say it. 'I am running for President,' " Republican former New Mexico Gov. Gary Johnson said via Twitter on April 21. He also launched a campaign website. Although Johnson’s a long-shot candidate—and wasn't invited to a debate until late September—he might give Paul a run for the libertarian vote: He supports the legalization of marijuana and civil unions.

PHOTO: ALEX WONG/NEWSMAKERS