Santorum upbeat before Puerto Rico vote

WASHINGTON -- An upbeat Rick Santorum barreled into Puerto Rico yesterday in pursuit of another campaign-bending victory in a Republican presidential race where suddenly no primary is too minor nor any delegate is conceded. Up north, Mitt Romney put nearly $1 million into television advertising in Illinois, the next big-state showdown.

"If we keep winning races, eventually people are going to figure out that Gov. Romney is not going to be the nominee," said Santorum, eager to build on Tuesday's unexpected victories in Alabama and Mississippi.

Romney rebutted suggestions that he can't appeal to core conservatives. "You don't win a million more votes than anyone else in this race by just appealing to high-income Americans," he said.

"Some who are very conservative may not be in my camp, but they will be when I become the nominee, when I face Barack Obama."