WASHINGTON (AP) - The debt negotiations appear to have put a dent in President  Obama's campaign war chest.
 
 The President's re-election campaign expects to raise tens of millions of dollars less this summer than it did last spring because the debt limit talks forced the President  to cancel several fundraisers.
 
President Obama raised a combined $86 million for his campaign and the Democratic National Committee during the spring.
 
But his campaign manager says they will raise significantly less money this summer because they can't reschedule all of the President's fundraisers. The campaign canceled or postponed 10 fundraisers involving President Obama , Vice President Joe Biden and White House chief of staff Bill Daley during the past month.
 
President Obama is attending two fundraisers Wednesday  in Chicago to celebrate his 50th birthday. The president turns 50 Thursday.