Ron Paul on Tuesday vowed he would not support Bernie SandersBernie SandersGabbard arrives in Puerto Rico to 'show support' amid street protests Democratic strategist predicts most 2020 candidates will drop out in late fall Sanders unveils plan to guarantee the 'right to a secure retirement' MORE’s White House run because of the Democratic presidential candidate’s similarities with Donald TrumpDonald John TrumpUS-Saudi Arabia policy needs a dose of 'realpolitik' Trump talks to Swedish leader about rapper A$AP Rocky, offers to vouch for his bail Matt Gaetz ahead of Mueller hearing: 'We are going to reelect the president' MORE.

“No, because he’s an authoritarian,” he said when asked if he’d back the independent Vermont senator on “CNN Newsroom."

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“He’s just a variant of Trump,” the former Texas representative added. "Even the things I worked with on Bernie, some of the foreign policy, he’s a part of the military industrial complex.

“He was a big voter for militarism. He’s an authoritarian of a different color, but Trump’s a super authoritarian. Trump wants to be the boss.”

Paul also argued that Democratic presidential front-runner Hillary ClintonHillary Diane Rodham ClintonMatt Gaetz ahead of Mueller hearing: 'We are going to reelect the president' What to expect when Mueller testifies: Not much McConnell challenger faces tougher path after rocky launch MORE does not present voters with a better option than Trump, her Republican counterpart.

“My biggest beef is that from a libertarian viewpoint there’s no meaningful difference between Hillary and Trump,” said Paul, who sought the GOP presidential nomination in 2008 and 2012.

“I mean, they both support the military industrial complex, the Federal Reserve, deficits, entitlements, invasions of privacy,” he added.

“It is super-nationalistic populism versus socialism. That is so remote from what we need to be doing. We need to be moving ourselves away from tyranny towards liberty.”

Sen. Rand PaulRandal (Rand) Howard PaulUS-Saudi Arabia policy needs a dose of 'realpolitik' McConnell challenger faces tougher path after rocky launch Overnight Defense: Iran seizes British tanker in latest escalation | US, UK to discuss situation | Trump says 'no doubt' US downed Iranian drone after Tehran's denials | Pentagon's No. 2 policy official to leave | Lawmakers worry about Defense vacancies MORE (R-Ky.), Ron Paul’s son, suspended his presidential campaign on Feb. 3 after a poor showing in Iowa’s first-in-the-nation caucuses.

Clinton and Trump are now leading their party’s respective primaries before multiple voting contests nationwide on Super Tuesday.

Trump leads the Republican field by nearly 16 percent, according to the latest RealClearPolitics average of polls. Clinton, meanwhile, possesses a roughly 10-point edge over Sanders, her sole competition for the Democratic mantle.