President Obama's re-election campaign claimed more than 475,000 donors during the most recent quarter but did not announce the amount of money they contributed.

Formal campaign finance reports are due by July 15.

Campaign manager Jim Messina sent an e-mail this weekend to supporters:

I know we've been asking a lot of you. In the first major test of this campaign, you delivered. More than 475,000 people decided to own a piece of this campaign in just our first quarter -- a promising sign of what's to come if we all stay focused and work together.

We'll be in touch with more information as we continue to crunch the numbers. But for now, I wanted to pass along a quick video I think you'll like. If you missed it, the president held a press conference earlier this week. The last few minutes were really something special. It's a good reminder of why we're fighting so hard to get him re-elected.

Here's some of what Obama said at the end of that news conference:

You know, every day I get letters from folks all around the country who show incredible resilience, incredible determination, but they are having a very, very tough time. They're losing their homes. Some have lost their businesses. Some have lost work and have not been able to find jobs for months, maybe a year, maybe a year and a half. And they feel some desperation. And some folks who are working just are having a tough time paying the bills because they haven't seen their wages or incomes go up in 10 years, and the costs of everything else have gone up. And every day that weighs on me. Every minute of every day that weighs on me ...