Democratic presidential candidate Bernie SandersBernie SandersIn California race, social justice wing of Democrats finally comes of age Sanders to headline progressive 'People's Summit' The Hill's 12:30 Report 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 TrumpManafort-linked accounts on Cyprus probed: report Republican failure Trump's environmental order jeopardizes our national security MORE than rival Hillary ClintonHillary Rodham ClintonClinton defends April Ryan, Rep. Maxine Waters in speech Lobbying world Trump puts foreign investors first by supporting the Republican tax plan MORE.
"If Democrats want the strongest candidate to defeat Trump, I think you're looking at him," Sanders said.