From Obama's campaign:

When I decided to run for president, I accepted that my opponents would dig through my record looking for something to attack.

I didn't realize they'd go all the way back to kindergarten.

I'll respond to each of the Clinton campaign's desperate attacks directly and honestly. But when I respond to each attack, I want to be able to say that I am not alone.

I want to be able to say that 10,000 people responded with me in the first 48 hours. And we're almost there.

Respond now with your donation of $25, and show our opponents that this kind of negativity will only make us stronger in our determination to bring about the change America needs.

It's all about how you play it.