Libertarian party presidential candidate Gary Johnson waits to be introduced before speaking during the Cannabis World Congress & Business Exposition in New York on June 16. Reuters

Marvin Bush — son of a Republican president, brother of a different Republican president and brother of a Republican presidential candidate — is not going to vote for a Republican this fall.

Bush, the son of George H.W. and brother of George W. and Jeb, told a radio show Wednesday that he supports Libertarian party, BuzzFeed reported. "These two guys — and nobody knows about them, people think it is sort of a wasted vote — but, both Gary Johnson and Bill Weld were each successful two term governors who balanced their budgets," Bush told The Junkies. "So they’re fiscally conservative and their essential message is get bureaucracy off our backs. It used to be a part of what the Republicans believed."

Bush went on to say he wanted trustworthy, effective leadership that made him feel safe when he went to sleep every night. He classified Democratic nominee Hillary Clinton as "dishonest" and took issue with GOP candidate Donald Trump's rhetoric.

"I want to have a conscience," Bush said.

He's not the only Bush trying to figure out what to do come November. Jeb Bush, who was expected to be the front-runner in the Republican primary before tycoon Trump entered the race, suspended his campaign in February amid tanking poll numbers. After spending months tangling with Trump, Jeb Bush has told reporters he doesn't know what to do.

"I can’t vote for Hillary Clinton and I can’t vote for Donald Trump, and it breaks my heart," the former Florida governor told MSNBC. "This is my first time in my adult life I’m confronted with this dilemma."

Jeb Bush later penned an editorial in the Washington Post condemning Trump and calling for a new, united GOP. Like his brother, he name-dropped the Libertarian Party — despite saying he hasn't decided which way to vote.

In any event, the Libertarian Party stands to benefit from the widespread voter disapproval of Trump and Clinton. RealClearPolitics data shows Johnson and Weld polling at about 8.6 percent when stacked against the two major party powerhouses.