Democrats looked to drum up enthusiasm among their supporters on Thursday, circulating an e-mail claiming that President Obama has accomplished more than any president since Franklin Delano Roosevelt.

The e-mail — signed by Vice President Joe Biden — thanked activists at the grassroots arm of the Democratic National Committee, Organizing for America, and asked them for their continued support.

"We knew it would take time. We knew it would be hard. And we knew we would sometimes make mistakes," Biden wrote. "But we did not lose sight of what we came to do. Together, we took on difficult issues that had been put off for decades. And some say we have accomplished more in two years than any administration since Roosevelt's."

The message comes as Democrats are beginning to gear up for Obama's 2012 reelection race. The White House announced Thursday that the president approved the creation of his Chicago campaign headquarters and named top staffers. 

White House press secretary Robert Gibbs said he would not "contradict the vice president."

"I think it's a big deal," he joked, playing off Biden's famous remark just before Obama signed his landmark healthcare overhaul into law.

Democrats are looking to seize early momentum in the 2012 race since no serious Republican candidates have officially entered the campaign. 

Biden told supporters that the administration's success is "literally proof that the organizing you do on the ground — the conversations you have with your friends and neighbors — is working."

The e-mail contained a list of legislative accomplishments, including healthcare reform, financial regulatory reform, the stimulus, the auto bailouts and the repeal of the military's "Don't ask, don't tell" policy, among others.

The committee also released a report titled "Promises Kept" that reviews Obama's first two years in office.

—This post was updated at 2:53 p.m.

Sam Youngman contributed to this post.