Obama raised a combined $86 million for his campaign and the Democratic National Committee during the spring.
Campaign Manager Jim Messina says they will raise significantly less money this summer because they can't reschedule all of Obama's fundraisers. the campaign canceled or postponed 10 fundraisers involving Obama, Vice President Joe Biden and White House Chief of Staff Bill Daley during the past month.
Obama is attending two fundraisers on Wednesday in Chicago to
celebrate his 50th birthday. The president turns 50 on Thursday.