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Former President Bill Clinton will join President Obama in appealing to deep-pocket Democratic donors at campaign fundraisers in the next few months, sources close to the arrangement tell Bloomberg News.

The events, which will reportedly take place in Los Angeles, Chicago, and New York, would mark the first time Clinton has joined Obama on the 2012 campaign trail and portray a sense of unity between Obama and his popular predecessor.

Obama campaign spokesman Ben LaBolt would not explicitly confirm or deny the joint appearances, saying only that he and Clinton spokesman Matt McKenna are telling reporters "nothing has been scheduled."

Clinton's support could also provide a boost to Obama's high-dollar fundraising, which has struggled to keep pace with 2008 levels, particularly among financial sector donors.

Obama has already collected more than $150 million for his re-election effort, personally attending 100 fundraisers since last April to stump for cash.  He will mingle with an elite group of donors behind closed doors in Washington Tuesday - his 34th campaign event of the year.