Former Pennsylvania Gov. Ed Rendell, a Hillary Clinton ally, says Clinton’s campaign should not declare victory too early because it could suppress voter turnout, especially with black voters.

He also admitted the media favors Clinton over Donald Trump and suggested there is a hidden Trump vote.

“I think there’s a hidden Donald Trump vote,” Rendell tells Rich Zeoli, a Philadelphia radio host. “All this talk about it being over and now the real contest is the Senate is going to persuade a couple of Hillary Clinton voters and Democratic voters to say ‘Well, what do I have to stand on line for an hour [to vote] for?’”

Rendell cautioned, “There a lot of things that are in motion that are favorable to Donald Trump. I wouldn’t say that it’s over then. The odds are that he’s going to lose, but I wouldn’t bet my life on it.”

Regarding black voters, Rendell added:

If you’re an African-American voter and you like Hillary — because you’ve always liked the Clintons — but, you know, it’s not Barack Obama, and you read that Hillary’s got Pennsylvania locked up — the [Philadelphia] Inquirer said that the Trump team had conceded Pennsylvania this morning — you read that and you say she’s going to win anyway. ‘What do I have to stand on line for an hour?’ If I were the Clinton team, I would be desperately worried about that type of talk. Desperately worried.

Rendell dismissed the idea that polls were inflated to suppress Trump voter turn out, but said, “The majority of the media’s against Donald Trump and favors Hillary Clinton.”