Herman Cain, a successful business executive running for the President, raised $2.5 million towards that cause in second quarter 2011.

How does that stack up historically and compared to other 2012 Republican candidates?

The answer is not well.

Cain is trailing Jon Huntsman at $4.1 million, Tim Pawlenty at $4.2 million, Ron Paul at $4.5 million, and Mitt Romney at $15 million to $20 million.

Historically, he's trailing Hillary Clinton at $27 million, Barack Obama at $32, and John McCain at $11 million in 2007. 

Going further back, he trails Howard Dean at $7.5 million and John Kerry at $6 million in 2003.

In the 2008 primaries, the fundraising results through June 30, 2008 were the following:

Obama at $278 million, Clinton at $242 million, Edwards at $57 million

McCain at $144 million, Romney at $113 million, Guiliani at $65 million

The election results were that Obama won the Democratic primaries, followed by Clinton and Edwards.

On the Republican side, McCain won, followed by Mike Huckabee (who raised $16 million) and Mitt Romney. 

Huckabee's performance offers some hope for Cain's campaign; he finished second, despite placing sixth in fundraising.

Maybe that's the kind of results Cain is hoping for.