In another worrisome sign for Democrats, a greater number of young Republicans are prepared to go to the polls in the 2010 election, according to a new survey.

The enthusiasm of young Democratic voters is waning, according to the poll from the Harvard Institute of Politics.

And it could spell trouble for the party.

"These 18-29-year-olds were a critical part of Barack ObamaBarack Hussein ObamaOvernight Energy: Dems ask Pruitt to justify first-class travel | Obama EPA chief says reg rollback won't stand | Ex-adviser expects Trump to eventually rejoin Paris accord Overnight Regulation: Trump to take steps to ban bump stocks | Trump eases rules on insurance sold outside of ObamaCare | FCC to officially rescind net neutrality Thursday | Obama EPA chief: Reg rollback won't stand Ex-US ambassador: Mueller is the one who is tough on Russia MORE's campaign and they personally believe they were directly responsible for his electoral success," noted Bill Purcell, director of the institute.

More young John McCainJohn Sidney McCainLawmakers worry about rise of fake video technology Democrats put Dreamers and their party in danger by playing hardball Trump set a good defense budget, but here is how to make it better MORE supporters than Obama supporters are preparing to go to the polls in November, according to the survey. While 44 percent of Obama supporters said they'd "definitely" be voting, 53 percent of Sen. McCain's (R-Ariz.) supporters said they planned to go to the polls. The poll found 35 percent of Democrats and 41 percent of Republicans intended to vote.

The poll of some 3,000 18- to 29-year-olds was conducted between Jan. 29 and Feb. 22.

The results indicate "young Republicans are showing more enthusiasm than young Democrats for participating in these elections," Purcell said on a conference call with reporters Tuesday.

At this time in 2008, both sets of young voters were expressing the same level of enthusiasm, said John Della Volpe, the institute's polling director. "This is kind of a new trend."