McCain appeals for GOP unity

Obama won 13 Super Tuesday states; Clinton, eight plus American Samoa. Clinton scored the advantage in delegates, bring her total to 845 to Obama's 765, by the latest accounting. The road ahead was long for the Democrats: It takes 2,025 delegates to claim their nomination.

Delegate tabulations continued Wednesday, possibly longer, and the victor in one race remained unsettled - the Democratic caucuses in New Mexico.

Clinton won the biggest state, California, capitalizing on backing from Hispanic voters. Obama scored victories in Alabama and Georgia on the strength of black support, and won a nail-biter in bellwether Missouri.

McCain's own victory in California dealt a crushing blow to his closest pursuer, Romney, a former Massachusetts governor.

"We've won some of the biggest states in the country," the Arizona senator told cheering supporters at a rally in Phoenix, hours before California fell his way. An underdog for months, he proclaimed himself the front-runner at last, and added. "I don't really mind it one bit."

In the competition that counted the most, the Arizona senator had 613 delegates, to 269 for Romney and 190 for Huckabee in incomplete counting. It takes 1,191 to win the GOP nomination.

Polling place interviews with voters suggested subtle shifts in the political landscape.

For the first time this year, McCain ran first in a few states among self-identified Republicans. As usual, he was running strongly among independents. Romney was getting the votes of about four in 10 people who described themselves as conservative. McCain was winning about one-third of that group, and Huckabee about one in five.

Overall, Clinton was winning only a slight edge among women and white voters, groups that she had won handily in earlier contests, according to preliminary results from interviews with voters in 16 states leaving polling places.

Obama was collecting the overwhelming majority of votes cast by blacks - a factor in victories in Alabama and Georgia.

Clinton's continued strong appeal among Hispanics - she was winning nearly six in 10 of their votes - was a big factor in her California triumph, and in her victory in Arizona, too.

Video Russert's Super Tuesday analysis Feb. 6: NBC's Tim Russert reports on the results from Super Tuesday - and what comes next for the contenders in both parties. Today show

McCain won in California, New York, New Jersey, Connecticut, Missouri, Delaware and his home state of Arizona - each of them winner-take-all primaries. He also pocketed victories in Oklahoma and Illinois.

Huckabee, the former governor of Arkansas, won a series of Bible Belt victories, in Alabama, Georgia and Tennessee as well as his own home state. He also triumphed at the Republican West Virginia convention.

Romney won a home state victory in Massachusetts. He also took Utah, where fellow Mormons supported his candidacy. His superior organization produced caucus victories in North Dakota, Montana, Minnesota, Alaska and Colorado.

Democrats played out a historic struggle between two senators: Clinton, seeking to become the first female president, and Obama, hoping to become the first black to win the White House.

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Clinton won at home in New York as well as in California, Massachusetts, New Jersey, Oklahoma, Tennessee, Arizona and Arkansas, where she was first lady for more than a decade. She also won the caucuses in American Samoa.

Obama won Connecticut, Georgia, Alabama, Delaware, Utah and his home state of Illinois. He prevailed in caucuses in North Dakota, Minnesota, Kansas, Idaho, Alaska and Colorado. His Missouri victory was so close in the vote total that there was no telling whether he or Clinton would end up with a majority of the state's 72 delegates.

New Mexico shut its vote counting operation until 11 a.m. EST, the Democratic race too close to know the winner.

The allocation of delegates lagged the vote count by hours. That was particularly true for the Democrats, who divided theirs roughly in proportion to the popular vote.

Nine of the Republican contests were winner take all, and that was where McCain piled up his lead.

Picking the president: The candidates Click to visit that candidate's MSNBC page or click the XML symbol for an RSS feed. John McCain                Barack Obama

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