Barack ObamaBarack ObamaPresident Obama should curb mass incarceration with clemency DNC applauds Obama investigation into Russian hacking Biden: Trump will not undo most climate change policies MORE's campaign raised $52 million in June, Obama's campaign manager David Plouffe wrote in an e-mail to supporters Thursday morning.

Obama and the Democratic National Committee now have $72 million in the bank, which is less than the nearly $100 million John McCainJohn McCainUkrainians made their choice for freedom, but now need US help White House orders intelligence report of election cyberattacks Senate votes to elevate Cyber Command in military MORE and the Republican National Committee have, Plouffe noted.

Read part of Plouffe's e-mail, in which he again appeals for more donations, below:

I have some big news we want to share with you.

In the month of June, supporters like you helped raise $52 million. And together with the DNC, we now have nearly $72 million in the bank. That's a very strong financial position to be in.

But we remain at a massive disadvantage to our opponents.

As I mentioned in my video message earlier in the week, the McCain Campaign and the Republican National Committee finished June with nearly $100 million in the bank.

We can't stop now. It's going to take everything we've got to defeat John McCain and his allies in November.