WASHINGTON - Today's primary contests could in Kentucky and Oregon could be an important day for Barack Obama.
He hopes to lock up a majority of his party's delegates.
All the while Hillary Clinton is promising to stay in the race. But Obama is already setting his sights on Republican John McCain and the general election campaign.
As the votes come in, the Obama campaign expects tonight's milestone could tip the game more to their favor.
Polls put Obama ahead in Oregon, where over the weekend he addressed this massive crowd of an estimated 75,000 people.
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"If you vote for me, then I promise you we won't just win Oregon, we'll win this nomination. We will win this general election," Obama said.
But Clinton - favored to win Kentucky - says it's premature to declare "mission accomplished."
"There is no way that this is going to end anytime soon because we're going to keep fighting for the nomination," she said.
Obama, McCain Trade Blows
Obama still falls short of the delegates needed to clinch the nomination, but that hasn't stopped him or McCain from already gearing up for the fall campaign by trading punches.
Some of those jabs are over Iran, which Obama described as less of a threat today than the former soviet union.
"Such a statement betrays the depth of Senator Obama's inexperience and reckless judgment," McCain said.
But McCain also dove into the domestic front - saying he would veto the $290-billion farm bill.
"It would be hard to find any single bill that better sums up why so many Americans in both parties are so disappointed in the conduct of their government, and at times so disgusted by it," he said.
As for Obama, he picked up six more superdelegates Monday, according to The Associated Press count. And the campaign expects tonight's results will push them even closer to the finish line.