15 weeks 2 days 15 hours ago Voters in KY and OR head to polls Play video

(NECN/ABC) - Voters in Kentucky and Oregon head to the polls Tuesday. 103 are at stake in Democratic primaries in both states.

Kentucky is expected to go to Hillary Clinton where 51 delegates are up for grabs. Most polls show the New York Senator with double digit leads.

But the race for Oregon's 52 delegates is tighter.

Pkg script: As Oregon voters turn in their ballots, Barack Obama argues a win here today gives him the edge he needs to finally beat Hillary Clinton.

Obama stated, "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."

Not so fast, says Clinton. She ran her own Kentucky Derby yesterday, holding four campaign rallies in the bluegrass state.

"The last thing we need is somebody who gives up and quits as our next president. This country is worth fighting for, it is worth standing up for and it is sure worth voting for." Stated by Hillary Clinton.

"Today we are going to see Barack Obama and Hillary Clinton battle over what it means to be victorious. He is going to claim a majority of pledged delegates is a very significant factor. She is going to claim that he does not yet have enough delegates to be the nominee."

But today could be a game changer for democrats. While not enough for the nomination, Obama's delegate count after today could tilt undecided super-delegates in his favor.

David Plouffe, Obama's Campaign Manager said,

So campaign hard they will. Three more primaries to go.

"Puerto Rico, South Dakota, Montana - all at the end of the process did not think they'd matter at all or get any attention. They love the presidential candidates coming in and campaigning.

They may love it, but at this point, it may only be a matter of time before Barack Obama wraps up the democratic nomination-- thanks in part to five
More super-delegates he picked up on Monday.

ABC News reporter Clayton Sandell has the story.