Sanders wins Oregon, vows to fight on

Sen. Bernie Sanders, I-Vt., won Oregon's Democratic primary last night, but the race in Kentucky, where he was expected to do well, remains too close to call.

Sanders beat rival and Democratic front-runner Hillary Clinton by a margin of 8.9 percent in Oregon. In Kentucky, Clinton leads Sanders by less than one-half of 1 percent and has declared victory, although media outlets have not called the race yet. But the final winner isn't as important as it voters might expect. Kentucky allocates its delegates proportionally, giving both candidates about 25 each based on their near-tie.

Although Sanders continues to do well in primaries, he's still behind in the overall Democratic delegate count. Clinton has 279 more pledged delegates than Sanders, and when so-called superdelegates are included, Clinton leads 2,291 to 1,528. She is now just 92 delegates short of the 2,383 she needs to secure the nomination.

But Sanders isn't giving up.

"Before we will have the opportunity to defeat Donald Trump, we're going to have to defeat Secretary Clinton," Sanders told supporters in Carson, Calif.

Trump, the presumptive Republican nominee, won the GOP contest in Oregon, pushing him to within 77 delegates of officially clinching the party's nomination.

Sanders insists he has a better chance of beating Trump in the general election and urged Democrats to welcome "people who are prepared to fight for real economic and social change."

The Associated Press contributed to this report.