Democratic presidential candidate Andrew Yang Andrew YangDoctor who allegedly assaulted Evelyn Yang arrested on federal charges The Hill's Campaign Report: Biden weighs in on police shootings | Who's moderating the debates | Trump trails in post-convention polls Buttigieg launches his own podcast MORE congratulated Sen. Mitt Romney Willard (Mitt) Mitt RomneyThe Memo: Warning signs flash for Trump on debates GOP votes to authorize subpoenas, depositions in Obama-era probe Overnight Defense: Trump hosts Israel, UAE, Bahrain for historic signing l Air Force reveals it secretly built and flew new fighter jet l Coronavirus creates delay in Pentagon research for alternative to 'forever chemicals' MORE (R-Utah) for voting to convict President Trump Donald John TrumpBarr criticizes DOJ in speech declaring all agency power 'is invested in the attorney general' Military leaders asked about using heat ray on protesters outside White House: report Powell warns failure to reach COVID-19 deal could 'scar and damage' economy MORE in the Senate on Wednesday.

"I just want to congratulate Sen. Mitt Romney for voting his conscience and his character," Yang told CNN's Don Lemon Don Carlton LemonScaramucci to Lemon: Trump 'doubling down' on downplaying virus 'should scare' viewers Cohen: Trump is serious when he mentions staying for more than two terms Cohen: 'I guarantee that it's not going to go well for whoever' set up Woodward interview MORE at a town hall in Manchester, N.H.

"He was the lone Republican to do so, which was disappointing but not wholly surprising," he continued. "We have to bring the country together, solve the problems that got Donald Trump elected in the first place, and that's how we're going to defeat him in the fall."

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Romney shocked his Republican colleagues on Wednesday when he voted to convict Trump on the charge of abuse of power in his Senate impeachment trial, saying “the president is guilty of an appalling abuse of public trust [and] a flagrant assault on our electoral rights.” Romney voted to acquit on the obstruction of Congress charge.

Yang said impeachment alone would not make it more difficult to defeat Trump in November.

"I think the ongoing polarization of our country is making Donald Trump harder to best in November," Yang said when asked if impeachment would make it harder for a Democrat to beat Trump.

"The fact is, many Americans have regarded this impeachment process as a football game or a baseball game where you know what the score is going to be at the end," he continued. "That's the way it played out, unfortunately."

--This report was updated on Feb. 6 at 6:36 a.m.