Rep. Justin Amash Justin AmashCentrist Democrats 'strongly considering' discharge petition on GOP PPP bill On The Trail: How Nancy Pelosi could improbably become president History is on Edward Snowden's side: Now it's time to give him a full pardon MORE (I-Mich.) on Wednesday brushed off political concerns over his decision to explore a potential run for president as a Libertarian, insisting that voters should have an option on the ballot in November other than President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE and former Vice President Joe Biden Joe BidenOmar fires back at Trump over rally remarks: 'This is my country' Trump mocks Biden appearance, mask use ahead of first debate Trump attacks Omar for criticizing US: 'How did you do where you came from?' MORE.

“There are millions of Americans who aren't represented by either Donald Trump or Joe Biden, who aren't represented by the Republicans or the Democrats,” Amash, 40, told MSNBC’s Ayman Mohyeldin in an interview. “And those millions of Americans deserve a choice on the ballot. And it's pretty silly to say, well, we shouldn't allow another candidate to be on the ballot.”

Amash pointed to other presidential candidates who initially faced backlash after announcing their White House bids, including former President Obama, who launched a campaign for the presidency little more than two years after entering the Senate.

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“We can always say the next election is the time, or the one after that,” Amash said. “But the truth is, the system will never change unless people step up.”

The Michigan congressman’s comments came less than a day after he announced that he would explore a potential run for the Libertarian presidential nomination.

Amash, a conservative serving out his fifth term in the House, left the GOP last year out of concern for the direction the party has taken under Trump. He sought to run for reelection to his House seat as an independent this cycle, a decision that drew a handful of Republican challengers to the race.

It’s unclear how Amash’s potential White House run could affect the race between Trump and Biden. On one hand, it could boost Biden if small-government conservatives move away from Trump and towards Amash in the general election.

But the move could help the president by pulling the support of center-right voters who remain uneasy with Trump and may have otherwise voted for Biden, a possibility that rattled Democrats after Amash announced his decision.

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“The noise you heard yesterday was a confetti cannon going off in the White House when Justin Amash announced that he was running for president,” former Sen. Claire McCaskill Claire Conner McCaskillMomentum growing among Republicans for Supreme Court vote before Election Day Democratic-linked group runs ads in Kansas GOP Senate primary Trump mocked for low attendance at rally MORE (D-Mo.) said on MSNBC’s “Morning Joe” earlier Wednesday.

“Every single anti-Trump vote needs to be focused on the viable candidate for president. Every single one. We do not have room for error in this election. This is no time for a Ross Perot or a Jill Stein or a Ralph Nader,” she added, referencing a slew of third-party candidates that won relatively high levels of support during their respective presidential bids.

Amash responded to McCaskill’s remarks, saying that the impact his would-be campaign has on the presidential race “cuts both ways.”

“This is about democracy. It's about representative government,” he said on MSNBC. “And the idea that we're going to tell people, 'hey, we can't have another choice on the ballot because it might upset one or the other candidate,' that's pretty ridiculous. And I will hear from lots of Trump supporters as well who say, ‘oh, you're helping Joe Biden.’”

To antagonize someone for mounting a third-party bid for the White House amounts to a form of “voter suppression,” he added.

“If people want to vote for someone, they should vote for that person. And if they don't want to vote for that person, don't vote for that person,” Amash said. “But don't attempt voter suppression essentially by denying people more candidates on the ballot. That seems really ridiculous and, frankly, anti-American.”