Democratic presidential candidate Bernie SandersBernie SandersSanders skirts Biden's claim that he'll endorse Clinton The Trail 2016: Meet and greet and grief Biden spills beans: Sanders will endorse Clinton MORE said on Sunday that he is gaining momentum with voters across the board, specifically noting his appeal to young voters.
"We are doing better and better with younger people, whether they're black, Latino or white," he said.
"Our numbers are getting better and better. In general, our numbers are getting better."
Sanders admitted his campaign hasn't done well in the deep South, but he said he's confident his numbers will continue to go up.
"And what we have done, based on yesterday at this point, we have now won seven primaries and caucuses all across this country, all with double-digit victories," he said.
He added that if the turnout is high in Maine on Sunday, he thinks he has a good chance of winning there.
"Just kind of showing strength all across this country," he said.
Sanders noted that in a general election match-up, he is doing better against Republican presidential front-runner Donald TrumpDonald TrumpTrump: 'I’m just flabbergasted’ by Clinton-Lynch meet Trump's new digital strategist quickly leaves campaign GOP megadonor compares Trump to Biblical figures MORE than rival Hillary ClintonHillary Rodham ClintonTrump: 'I’m just flabbergasted’ by Clinton-Lynch meet AFL-CIO head: Trump’s ‘a fraud’ Sanders skirts Biden's claim that he'll endorse Clinton MORE.
"If Democrats want the strongest candidate to defeat Trump, I think you're looking at him," Sanders said.