Bill on Hillary: Sometimes 'I wish we weren't married' so I could speak my mind

Former President Clinton says that being Hillary ClintonHillary Rodham ClintonToomey: 'No reason' Trump supporters shouldn't back me WATCH LIVE: Trump delivers 'first 100 days' speech in Gettysburg Dylan's 'Jokerman' a metaphor for Election 2016 and more MORE's husband puts limits on what he can say on the campaign trail.

"The hotter this election gets, the more I wish I were just a former president and just for a few months, not the spouse of the next one," he said when introducing his wife on the campaign trail in New Hampshire on Monday. "Because, you know, I have to be careful what I say."

"Tonight my job is to introduce Hillary," he added. "Sometimes when I'm on a stage like this, I wish we weren't married. Then I could say what I really think."

Bill ClintonBill ClintonIs Georgia turning blue? If Smithsonian ever includes Clarence Thomas, it should be alongside Anita Hill The Hill's 12:30 Report MORE has gone on the attack recently against Hillary Clinton's rival, Sen. Bernie SandersBernie SandersHow a new Clinton presidency will change American politics forever Ex-Arizona governor: Hispanic Dems 'don’t get out and vote' Emails show Clinton camp's plans to work with writers to hit Sanders MORE (I-Vt.), raising concerns among Democrats who think the ex-commander in chief is being too aggressive.

On Sunday, he accused Sanders supporters of sexist attacks against Hillary Clinton. He also criticized the Vermont Independent's positions on healthcare and campaign finance.

“Is it good for America?” Clinton asked of Sanders’s healthcare model at an address two days before the New Hampshire primary. “I don’t think so. Is it good for New Hampshire? I don’t think so."