In campaign news, Senator Barack Obama is reportedly planning to declare himself the effective Democratic nominee Tuesday night at a rally in Iowa following the Kentucky and Oregon primaries. Obama is expected to win enough delegates on Tuesday to secure more than half of the total pledged delegates. On Sunday, Obama spoke before a crowd of 75,000 people in Portland, Oregon. It was the largest campaign rally of this election year. While Senator Hillary Clinton has pledged to remain in the race, the Washington Post reports that top fundraisers of the two candidates have had private talks about merging the campaigns.