CHICAGO -- Illinois' highest court put Rahm Emanuel back in the race for Chicago mayor Thursday, three days after a lower court threw the former White House chief of staff off the ballot because he had not lived in the city for a full year.
The state Supreme Court ruled unanimously in Emanuel's favor, with a majority of justices concluding that the earlier decision was "without any foundation" in the law because it said a candidate must be physically present in Chicago.
"As I said from the beginning, I think the voters deserve the right to make the choice of who should be mayor," Emanuel said shortly after getting word of the high court's action. "I'm relieved for the city. I'm relieved for the voters because they need the certainty that's important for them."
Emanuel lived for nearly two years in Washington working for President Barack Obama. He moved back to Chicago in October, after Mayor Richard M. Daley announced he would not seek another term, and soon became the heavy favorite to lead the nation's third-largest city. He has also raised more money than any other candidate.
After learning of Thursday's decision, Emanuel said he took a congratulatory call from his old boss, the president.
Political observers said the ruling resurrecting Emanuel's candidacy would probably give him added momentum heading into the last month of the campaign.
Don Rose, a longtime analyst of Chicago politics, said the saga would bring Emanuel "even greater sympathy" and could lift him to victory.
"It's over," Rose said. "The only open question is whether he wins it in the first round or whether there's a runoff."
But the other contenders in the race did not give any ground.
"Game on," said Gery Chico, the city's former school board president and one of Emanuel's more prominent rivals. He complained that the recent "drama" surrounding Emanuel had "made this election into a circus instead of a serious debate about the future of Chicago."
Former Sen. Carol Moseley Braun said she did not question the court's decision.
"The fact is that the field hasn't changed. We're all still in this, and we're all trying to get our message out," she said Thursday at a televised debate, where she was joined by Emanuel, Chico and City Clerk Miguel del Valle.
However, if Emanuel does not get more than 50 percent of the vote on Feb. 22, a runoff election could be more difficult to win against a single rival instead of the five he faces now.
"It's going to be very turbulent in the next week or two. A number of voters will reconsider," said Dick Simpson, a political science professor at the University of Illinois at Chicago.
The attorney who challenged Emanuel's residency said he would not appeal the decision to the U.S. Supreme Court.
"We don't feel there's a federal issue," Burt Odelson said.
Emanuel never stopped campaigning as the case unfolded.
The former White House aide has said he always intended to return to Chicago, and his arguments were accepted by the city election board and a Cook County judge before the appeals court rejected them.
The Supreme Court took special note of Emanuel's testimony before the election board in which he listed all the personal items he left in his Chicago house, which he rented out after moving to Washington. The belongings included his wife's wedding dress, photographs of his children and clothes they wore as newborns.
The board "determined that, in this situation, the rental did not show abandonment of the residence," the court wrote in the main opinion. "This conclusion was well supported by the evidence and was not clearly erroneous."
In an opinion that was unusually critical of the appellate ruling, the justices said Illinois' residency law "has been consistent on the matter since at least the 19th century."
While all seven justices ruled in Emanuel's favor, two of them issued a separate opinion that was more sympathetic to the lower court, saying Illinois residency law was not as clear-cut as the others believed.
"Spirited debate plays an essential role in legal discourse," they wrote. But the majority opinion and a dissent by an appeals judge "cross the line."
"Inflammatory accusations serve only to damage the integrity of the judiciary and lessen the trust which the public places in judicial opinions," they wrote.
Chicago-based election attorney Adam Lasker said he was surprised by Thursday's decision because the reasoning behind the lower court ruling was sound. He surmised that "there was a lot of pressure from the public."
"The court of public opinion may have won this one," he said.
In the future, the decision could allow less prominent or desirable figures than Emanuel to get on the mayoral ballot.
"It could become known as the Landlord Rule," he said. "Now anyone who rents his house, leaves clothes in it and moves out of Chicago, can come back, and they can be a candidate."
But Edward Foley, a law professor at Ohio State University, said the high court ruling made sense.
"This wasn't a slam-dunk for Emanuel going in," he said. "But it shows the justices saw the appellate court ruling as a hiccup."
When faced with an ambiguity in election law, he said, the justices "decided that you want to err on the side of letting voters vote for candidates that they want to."
In their appeal, Emanuel's attorneys called the appellate court decision "one of the most far-reaching election law rulings" ever issued in Illinois, not only because of its effect on the mayoral race but for "the unprecedented restriction" it puts on future candidates.
His lawyers raised several points, including that the appeals court applied a stricter definition of residency than the one used for voters. They said Illinois courts have never required candidates to be physically present in the state to seek office there.
Monday's surprise ruling threw the mayoral race and Emanuel's campaign into disarray. The following day, the state Supreme Court ordered Chicago elections officials to stop printing ballots without Emanuel's name on them. Nearly 300,000 ballots had been printed before they stopped.
In the Emanuel family, Thursday's decision was to have lasting implications.
"I have banned the word 'resident' in Scrabble in our household. I never want to see it again," Emanuel said. "Even if you get it on a triple word, you're not allowed to use it."
Associated Press writers Michael Tarm, Tammy Webber, Sophia Tareen and Karen Hawkins contributed to this report.