Sanders vows to keep fighting after Oregon win

Hillary Clinton claimed a narrow victory in Kentucky Tuesday as she sought to put away Bernie Sanders, but her resilient rival for the Democratic presidential nomination bounced back to snatch a win in Oregon.

With the Kentucky race too close for most US networks to call a winner, Clinton declared victory shortly after Kentucky's secretary of state Alison Lundergan Grimes announced on CNN that Clinton was the unofficial winner in her state.

With 99.8 percent of Blue Grass state precincts reporting, Clinton led Sanders by 46.8 percent to 46.3 percent -- a margin of less than 2,000 votes.

But the psychological win was short-lived. Half an hour after polls closed in Oregon, US networks projected Sanders the winner there, besting Clinton 53 percent to 47 percent.

"We just won Oregon, and we're going to win California," Sanders told thousands of supporters in Carson, California as he predicted victory in the nation's largest state, which votes on June 7.

Sanders, a self-declared democratic socialist, declared he would not be forced out of the race by narrow Clinton wins.

"Let me be as clear as I can be... We are in 'til the last ballot is cast," he said to a huge roar.