From CBS News' Maria Gavrilovic:
CHICAGO -- Today is not a typical primary day for Barack Obama, who expects to reach a campaign milestone – gaining the majority of elected pledged delegates. The campaign is confident that the results of today's Kentucky and Oregon primaries will allow him to reach that mark, which means that rather than concentrating on the Democratic contests and upcoming primaries, Obama is going to entirely shift his focus to the general election. He will be marking this achievement with an election night rally in Des Moines, Iowa, tonight, which Obama describes as a "reunion with everybody who helped us get started."
"We thought it was a terrific way to kind of bring things full circle," Obama said in Oregon on Sunday. "We still have some contests left, but if Kentucky and Oregon go as we hope, then we think we will have a majority of pledged delegates at that point, and that's a pretty significant mark."
His speech tonight is expected to look forward to November and defeating John McCain. Although the final draft is still being written, Obama is not expected to go after Hillary Clinton. The campaign said they have not changed their position on Hillary Clinton's decision to remain in the race and will not encourage her to drop out, saying they will leave that decision up to her.
In the coming days, Obama will be campaigning in Florida, despite the fact that the issue of the seating the state's delegates has yet to determined.