The Clintons are the last couple voters should give unfettered access to the Lincoln bedroom.

Just the excerpts from Gary Byrne’s explosive new book, “Crisis of Character: A White House Secret Service Officer Discloses his Firsthand Experience with Hillary, Bill and How They Operate,” will make you cringe.

The tell-all says Hillary flashed a “Jekyll and Hyde” personality while Bill was lusting after Monica Lewinsky and other women all over the Oval Office.

The Clintons have attacked Donald Trump’s temperament, but voters should take note of Byrne’s book. This author, who worked in close proximity to the Clintons in the White House for years, describes Hillary as one moment friendly, the next raging.

Byrne said he saw it all — including Hillary’s alleged screaming matches over Bill’s cheating ways.

Byrne even says Lewinsky knew Bill’s rhythmically coded four-digit passcode so she could direct-dial him anytime. We’re not talking about an email server in the basement, but direct access to a sitting president.

Which begs the question: With all the multitude of serious problems facing America, do we need more of Bill’s sexual shenanigans for another four years?

The book also reportedly depicts Hillary as too “erratic, uncontrollable and occasionally violent” to become leader of the free world. Byrne claims Hillary repeatedly screamed obscenities at her husband, White House staffers and even telling the Secret Service to back off, but in more colorful language.

Those around her lived in fear of her next tirade while the Secret Service stressed over whether they’d have to protect the president from his own wife’s assaults, Byrne writes.

Byrne, according to excerpts, even describes an incident where after a loud shouting match between Bill and Hillary, he found a vase smashed into bits and saw Bill the next day with a black eye. If true, in the private sector, that’s considered domestic violence.

But don’t expect the left-leaning media to invite Byrne — a veteran with a 29-year career in law enforcement — on air anytime soon. It’s also been reported that the Clinton camp has been working behind the scenes to get Byrne blacklisted from appearing on some of the major networks.

But it may be too late. Voters could just say enough with the Clinton calamity and try Trump on for size.

Adriana Cohen is co-host of “Herald Drive” airing 6-9 a.m. on Boston Herald Radio. Follow her on Twitter @AdrianaCohen16.