Sen. Bernie SandersBernie SandersGOP sees debt ceiling as its leverage against Biden Democrats brace for slog on Biden's spending plan To break the corporate tax logjam, tax overinflated CEO pay MORE (I-Vt.) on Wednesday had a message for the "Bernie-or-bust" voters: vote based on the issues, not "personality."

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"People have got to get beyond personality, and they've got to take a hard look at the issues that impact the lives of middle-class and working-class people," Sanders told ABC News.

"That's what this campaign is really about."

The Vermont senator touted Democratic presidential nominee Hillary ClintonHillary Diane Rodham ClintonA path to climate, economic and environmental justice is finally on the horizon Polling misfired in 2020 — and that's a lesson for journalists and pundits Biden flexes presidential muscle on campaign trail with Virginia's McAuliffe MORE's stances on education, environment and campaign finance, contrasting her views with those of her Republican opponent, Donald TrumpDonald TrumpCuban embassy in Paris attacked by gasoline bombs Trump Jr. inches past DeSantis as most popular GOP figure in new poll: Axios Trump endorses Ken Paxton over George P. Bush in Texas attorney general race MORE.

"I think if you look at the issues — whether it is making public colleges and universities tuition free, dealing agressively with climate change, raising the minimum wage, overturning this disastrous Citizens United Supreme Court decision," Sanders said.

"On all of those issues and many more, Hillary Clinton's positions are far, far, far superior to Donald Trump."

Sanders said he plans to do everything he can to ensure Trump does not become the next president of the U.S.

The Vermont senator has given similar advice to the Democratic nominee in the past.

Earlier this month, Sanders said Clinton needs to "get away from all of this personality stuff" and start talking about the real issues facing the country.

"The American people do not agree with Trump," he said.