MADISON, Wis. -- A dramatic flip in areas of Wisconsin that supported President George W. Bush four years ago fueled Barack Obama's 13-point landslide in Tuesday's election.

VIDEO: Doyle Talks About Obama's Win

Obama won 58 of Wisconsin's 72 counties to claim the state's 10 electoral votes. John Kerry won only 28 in 2004.

Not only did Obama win in more places to build his 13-point margin, he did dramatically better than Kerry in a places such as Brown County, which includes Green Bay. Obama won by 9 percentage points. That was a 19-point reversal from Bush's 10-point win there in 2004. Obama won Door County by 18 points. Bush won it by three points.

The Democratic president-elect carried every major constituency -- men, women, whites, blacks, the working class and young voters. Overall, Obama defeated Republican rival Sen. John McCain 56 to 43 percent in Wisconsin.

The 13-point win continues the Republican presidential losing streak in Wisconsin to 24 years. Wisconsin hasn't gone for a Republican presidential candidate since Ronald Reagan's reelection in 1984.

Unlike the past two elections where the Democrat won by less than half a percentage point, Obama carried the state handily on Tuesday.

Earlier in the campaign, both presidential candidates saw the state as winnable, but gave up campaigning about a month ago when polls showed Obama with a double-digit lead over McCain.

Obama's financial advantage allowed him to dominate the airwaves in the final weeks of the race and he benefited from a well-run campaign organization that stretched across the state.

The Associated Press' call on Tuesday was based on an analysis of voter interviews, conducted for the Associated Press by Edison Media Research and Mitofsky International.

Wisconsin was one of several states that fell to the column of the U.S. senator from Illinois. With victories in Florida, Ohio, Pennsylvania, Virginia and other battleground states, Obama built a commanding lead in electoral votes over McCain. Obama will be the nation's 44th president and the first black chief executive.

Wisconsin Gov. Jim Doyle was among those in Obama's corner, endorsing him shortly after the senator's win in the Iowa caucus in early January. Wisconsin Democrats celebrated Obama's big win with a party at the Monona Terrace. Doyle congratulated the crowd for helping deliver an Obama win in Wisconsin and spoke of turning the page on the bush administration.

"(It's) just an incredible night," Doyle said. "This state, we wanted change badly. These last eight years have been not good for the whole country and they've hurt Wisconsin and along came a leader, at a time when we really needed a great leader, along came this candidate who no one had even heard of and over the last two years he's demonstrated he's ready to be one of the great, great president this country's ever had."

Exit Polls Breakdown Obama's Victory

According to exit polls, Obama's surge in Wisconsin polls during last month coincided with survey respondents saying that they preferred his plans for an economic rescue. Voting patterns matched that trend, as Obama carried the three in five voters who called the economy the most important issue facing the country. Nine in 10 voters said they're at least somewhat worried about the economy.

The polls found that McCain's selection of a woman as his running mate, Alaska Gov. Sarah Palin, didn't translate into support from female voters, as three in five women voted for Obama. Men favored Obama by a slight margin.

About one in five voters was under 30 -- a group that was firmly in the Obama camp. About one in 10 said this was the first year they ever voted, a bloc that gave Obama overwhelming support. McCain had been trending strongly with older voters, but he and Obama were about even among voters over 65.

According to the exit polls, black voters gave Obama near-universal support but comprised only one in 20 Wisconsin voters. Obama carried a moderate edge among white voters.

The polls said that the less income voters made, the more likely they were to favor Obama. Those who make less than $50,000 strongly supported him while voters making more than that split their support about evenly between him and McCain.

Stay tuned to WISC-TV and Channel 3000 for continuing coverage.