While Senator Clinton chalked up a victory in New York State on Super Tuesday, Senator Obama beat her in three of the city’s congressional districts and split delegates down the middle with her in five congressional districts, including the one in which Mrs. Clinton lives.

Mr. Obama won more votes than the home-state senator in three out of the four New York congressional districts with black representation: the district of Rep. Gregory Meeks in Queens, the district of Rep. Edolphus Towns in Brooklyn, and the district of Rep. Yvette Clarke in Brooklyn. He did not win the district of Rep. Charles Rangel in Harlem.

Although Mrs. Clinton had long been expected to win her home state, Mr. Obama’s campaign made a concerted effort to pick off New York delegates, with a top local fund-raiser for Mr. Obama, Gordon Davis, sending out an e-.mail last week saying that the campaign was targeting five congressional districts in the city.

In addition to the three districts Mr. Obama won on Tuesday, other targeted districts were the areas represented by Reps. Carolyn Maloney and Jerrold Nadler. In those two districts, which include the West and East sides of Manhattan, the Democratic candidates split delegate votes down the middle, according to figures compiled by the state Democratic Party.

Mrs. Clinton’s political supporters praised her performance in New York yesterday and chose to look at her win by the number of state counties she won (61 out of 62), instead of her tally by congressional district.

Tompkins County, which encompasses Ithaca, where Cornell University is situated, was the one county in New York won by Mr. Obama.

Senator Schumer, who is supporting Mrs. Clinton, said he knew that she would win New York “but nobody thought she’d win by as much as she did.”

“She won rural upstate districts with 60 and 70%. She won the anti-war region in the Upper West Side. She won Harlem. I thought she might lose my district in Brooklyn, and she won those areas,” he said yesterday during a conference call with reporters. “She did an incredible job and I think the no. 1 thing that this shows is people who know Senator Clinton vote for her.”

Overall, Mrs. Clinton won 57% of the vote in New York and Mr. Obama picked up 40%, with 99% of precincts reporting. In Mr. Obama’s home state, Illinois, he took 65% of the vote and Mrs. Clinton pulled in 33%, with 99% of precincts reporting.

A New York spokesman for Mr. Obama, Richard Fife, noted that Mr. Obama won his home state of Illinois by about twice the margin that Mrs. Clinton won in New York.

“This is further proof that the more voters get to know Barack Obama and hear his message, the more they support him, and this bodes very well for the contests coming up in the next few weeks,” Mr. Fife said.

A partner at the political consulting firm Prime New York, Gerald Skurnik, said that according to exit polls, Mrs. Clinton carried white and Hispanic voters in her home state and narrowly carried white male voters, which he said she hasn’t done in other states.

He said Mr. Obama did well with black voters in New York and voters who earn between $100,000 and $200,000.