Here's a look at the headlines in the presidential race, from The Associated Press.

McCain highlights military heritage at start of the biographical tour

Obama leads in ongoing tally of Texas caucus results

Bill Clinton courts superdelegates in California

Should Hillary Clinton drop out? Obama says no. Watch today's video:

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ON THE CAMPAIGN TRAIL
Hillary Rodham Clinton and Barack Obama campaign in Pennsylvania. John McCain gave a speech in Mississippi.
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QUOTE OF THE DAY“Between Barack and a hard place, I chose Barack.” — Minnesota Sen. Amy Klobuchar, who endorsed fellow Democratic Sen. Barack Obama for president on Monday, saying it had been difficult being uncommitted in the race.
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STAT OF THE DAY:
Pennsylvania has an estimated 3.8 million Catholics, or just over 30 percent of the state’s population, and the percentage among Democrats is estimated to be slightly higher.

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