(CNN) - VoteBoth, the organization that is aggressively seeking to land Hillary Clinton on Barack Obama's presidential ticket, says it has upwards of 25,000 signatures on its petition calling for the New York senator to serve as No. 2.
According to the group's co-founder, Sam Arora, the vast majority of those signatures came entirely after Obama clinched the party's nomination Thursday and were generated largely on media buzz and interest in the potential for a unity ticket.
"The online activity we've seen is a sneak peak at the millions of Democrats who are hoping for an Obama-Clinton dream ticket," Arora told CNN.
"The choice is Sen. Obama's alone, and we hope to continue making the case to him that choosing Sen. Clinton would unite the Party and lead us to victory in November," he also said.
Those who have signed the petition include several prominent Democrats, most of whom were backers of Clinton, including Govs. Ed Rendell and Tom Vilsack and Sens. Chuck Schumer and Dianne Feinstein.
Since Obama officially clinched the nomination Tuesday night, several high-profile backers of Clinton have publicly urged she serve as the Illinois senator's running mate.
Clinton even reportedly said she was open to the possibility in a conference call with supporters earlier this week, though her campaign issued a statement saying she is not actively seeking the job.
Arora said the organization will continue to step up its efforts for a unity ticket, and explore several different avenues for getting its message out. On Thursday, ardent Clinton support Lanny Davis, whose fierce support of the former presidential candidate has become a fixture on cable news shows, signed on to the group as a senior adviser.