the possibility of running as vice president . `` This has been a long campaign , and I will be making no decisions tonight , '' she said . Watch Clinton congratulate Obama '' There were reports earlier in the day that she would concede , but her campaign said she was `` absolutely not '' prepared to do so . Two New York lawmakers also told CNN on Tuesday that during a conference call Clinton expressed willingness to serve as Obama 's running mate in November . Watch the latest on a possible joint ticket '' ' One source told CNN that Clinton told those on the call that if asked by Obama , she would be interested in serving as his running mate . One of the lawmakers said Clinton 's husband , former President Bill Clinton , has been pushing the idea privately for several weeks . The Clinton campaign maintains the New York senator merely said she would do whatever is in the party 's best interest , and that her comments Tuesday are no different than what she has been saying for weeks . Clinton said she would meet with supporters and party leaders in
WASHINGTON -LRB- CNN -RRB- -- In what he called a `` defining moment for our nation , '' Sen. Barack Obama on Tuesday became the first African-American to head the ticket of a major political party . Sen. Barack Obama on Tuesday told supporters he will be the Democratic nominee . Obama 's steady stream of superdelegate endorsements , combined with the delegates he received from Tuesday 's primaries , put him past the 2,118 threshold , CNN projects . `` Tonight we mark the end of one historic journey with the beginning of another -- a journey that will bring a new and better day to America , '' he said . `` Tonight , I can stand before you and say that I will be the Democratic nominee for president of the United States . '' Watch Obama say he 'll be the nominee '' Obama 's rally was at the Xcel Energy Center in St. Paul , Minnesota -- the same arena which will house the 2008 Republican National Convention in September . Speaking in New York , Sen. Hillary Clinton , congratulated Obama for his campaign , but she did not concede the race nor discuss