Former Vice President Al Gore, who served under Bill Clinton, has refused to endorse Democratic presidential front-runner Hillary Clinton - or anyone for that matter - saying it is too early in the process to back a candidate.

"It's still too early, in my opinion, to endorse a candidate or pick a candidate," Gore told People in an interview Tuesday. "Everybody can look at how the presidential campaign is developing and get some pretty clear ideas about how they think it's going to turn out, but I still think it's premature."

The 45th vice president noted that the general election is still a full year away, saying, "I think I'll wait to wade into it."

Only three candidates are currently running for the Democratic nomination - Clinton, Vermont Sen. Bernie Sanders and former Maryland Gov. Martin O'Malley.

As for rumors that Gore was considering jumping into the race, he chuckled and dismissed the idea, telling People that he remains committed to environmental issues and climate change.

"I have taken no steps whatsoever in the direction of a candidacy and my answer has been the same for 10 years now - or more - and you probably heard my answer before: I'm a recovering politician and the longer I go without a relapse, the less likely one becomes," Gore said.

Gore is the second major personality to refuse to endorse Clinton in the past week, with undefeated UFC women's bantamweight champion Ronda Rousey throwing her support behind Sanders in a recent Maxim interview, as HNGN previously reported.

"I'm voting for Bernie Sanders, because he doesn't take any corporate money. I don't think politicians should be allowed to take money for their campaigns from outside interests," Rousey told Maxim.

"If he doesn't win against Hillary, then I'll probably vote for a third party again," said Rousey, who will defend her belt this Saturday against challenger Holly Holm, noted The Daily Caller.

Rousey added: "To be honest, in 2012 I was against both candidates and so I just picked any third party because I thought if more people voted for third parties then they'd have to take third parties seriously."