Former President Bill Clinton
William (Bill) Jefferson ClintonBiden, Harris stump in battleground Arizona in first joint campaign stop in state Bill Clinton, Lin-Manuel Miranda join 'West Wing' reunion special Federal road funding nearly expired — let's focus before the next deadline MORE took a swipe at Democratic presidential candidate Bernie Sanders
Bernie SandersSanders endorses more than 150 down-ballot Democrats Postal service crisis — California is ready to pilot a postal banking solution Daily Beast reporter: Progressives feel alienated after Biden's socialism jab MORE ahead of Tuesday's pivotal primaries by casting him as the "blame candidate."
"There's a blame candidate and a responsibility candidate in this race," he said outside a polling place in Illinois, according to footage shot by NBC News.
"I bet the responsibility candidate is going to win."
Clinton's comments came as his wife, Democratic front-runner Hillary Clinton
Hillary Diane Rodham ClintonJudge's ruling puts competitive Minnesota House race back on track for November The Memo: Trump searches for path to comeback Overnight Defense: Trump sows confusion over Afghanistan troop levels | Trump tells Iran not to 'f--- around' with US | Supervisor of soldiers who appeared at Democratic convention faces discipline MORE, continues a last-minute push in states holding primary elections on Tuesday. A strong performance could add to her significant delegate lead, but Sanders is looking to gain ground with wins in Ohio, Missouri and Illinois.
President Clinton has hit the trail for a series of campaign events on behalf of his wife, but he's been more muted than he was in 2008. During that primary, he found himself in hot water over repeated barbs about then-Sen. Barack Obama
Barack Hussein ObamaTrump calls into Rush Limbaugh's show for two hours World Food Programme's Nobel: Why the UN, NATO and alliances matter in this election Poll shows Biden leading Trump, tight House race in key Nebraska district MORE.
Tad Devine, a top Sanders aide, downplayed the former president's comments during an interview on MSNBC.
"I don't accept that. Bernie's candidate is resonating ... all across the nation because it's what people really believe we need to do in this country," he said.
"That's what's resonating, it's not a question of blaming anybody, it's a question of standing up to powerful interests on behalf of ordinary people."