McCain wins nomination; Democrats split states

Hillary Rodham Clinton won the Rhode Island primary Tuesday night and raced to a big lead in Ohio, yet struggled to make a major dent in Barack Obama's delegate lead in a riveting Democratic presidential race. Arizona Sen. John McCain, an unflinching supporter of the war in Iraq, clinched the Republican nomination.

Clinton claimed victory in Ohio, and told cheering supporters, "We're going on, we're going strong and we're going all the way."

Obama won the Vermont primary for his 12th straight victory in one month's time, and the two rivals were locked in a tight race in the Texas primary. No matter how it turned out, he said "We have nearly the same delegate lead as we did this morning, and we are on our way to winning this nomination."