President Obama's grassroots group late this afternoon announced the winner of its health care video contest -- a bunch of cute kids at a playground listing medical problems and saying that they deserve health care.

Organizing for America said it received more than 1,000 entries (some of which are mashed together at the beginning of the YouTube video with the winner) before narrowing them to 20 finalists and picking one.

"The winning video shows that our supporters' creativity and passion is more than a match for the slick ads and partisan spin doctors on the other side. In the next few days, we'll be using this video as the basis for a new television ad that will air across the country -- and you can help, by ensuring we have the resources to make the biggest impact," Obama's campaign manager David Plouffe says in an email to supporters soliciting contributions.

"With Congress wrapping up its last round of negotiations and closely gauging the public's mood in these crucial final weeks, now is the exact time to get this grassroots message out far and wide."

Exactly one year since his historic election, President Obama sent a video message today to his grassroots supporters, telling them that they put him in office, thanking them for their dedication since, but warning that they have much more work to do.

"Victory alone was not the change we sought, it was only the chance for us to make that change," he says.

His campaign manager David Plouffe elaborates in an email to Organizing for America accompanying the video: "One year ago today, you made history.We all knew that electing Barack Obama President was only the opportunity to bring about change; that we would all have to keep working to fulfill the promise our victory offered.

"And you've come through -- by making hundreds of thousands of calls to Congress to push health reform forward, by pouring your effort into seemingly insurmountable challenges time and again, and, since January, by building on the power of our campaign to create Organizing for America. And now, with the finish line on health reform in sight, we need your voice more than ever before," Plouffe implores.