Hello on this Tuesday, the 3 day of June 2008. I'm Kristin Volk with a UPI Headline Update. Senator Barack Obama is expected to declare himself the Democratic Party's presidential contender tonight. The Democratic primary season is finally wrapping up today as Montana and South Dakota hold nominating contests. Obama needs just 42 delegates to clinch the nomination. Montana and South Dakota don't have enough pledged delegates at stake to put Obama over the top, but the Illinois senator could receive a rush of endorsements from the remaining undeclared superdelegates by the end of the day to allow him to claim victory. Senator Hillary Clinton is 201 delegates shy of capturing the nomination. Meanwhile, the House majority whip says he's backing Senator Barack Obama for president. Rep. James Clyburn, who's the top-ranking African-American in Congress, had been neutral in the Democratic presidential race until today. Clyburn said Obama is our nation's best hope for much needed change....