Message for Obama backers

President Obama's grassroots army is being urged today to help him follow through on the "foundation for change" he has built during his first 100 days in office.

"A lot of attention will be given to this largely symbolic day, and the truth is that what we do every day after it will be just as important -- if not more. But our accomplishments in this time have been remarkable, and they're having real effects on people and communities throughout the country," David Plouffe, Obama's campaign manager last year, told supporters in an email. He now heads Organizing for America, the vehicle affiliated with the Democratic National Committee that includes Obama's millions of supporters.

"This new direction would not have been possible without you. But our biggest tests are yet to come, and the future is ours to shape. Let's seize this moment together so history will show that, at this defining crossroads, a generation of Americans put their country on the path to long-term security and prosperity."

The message includes a link to check what has been done for each state.

In advance of Obama's town hall Wednesday in suburban St. Louis, Organizing for America is holding a "listening tour" event today in St. Louis.

"Today, we're here with one goal in mind - to listen," said Dan Herman, the group's state director for Missouri. "The historic dedication and commitment of our supporters is what brought us victory in November and is what will help us advance President Obama's bold vision for the country over the coming years. They, more than anyone else, know what approaches will work best in their community and were eager to hear from them."