Sen. Susan Collins became the latest Republican to say that they will not vote for Donald Trump. | Getty Susan Collins: I'm not voting for Trump

Sen. Susan Collins joined the growing list of Republicans who say they aren’t supporting Donald Trump in the general election.

“Donald Trump does not reflect historical Republican values nor the inclusive approach to governing that is critical to healing the divisions in our country,” she wrote in a piece for The Washington Post.


The senior senator from Maine lists three major incidents as explanations for why she can’t support Trump: She cited Trump mocking a reporter with disabilities, his comments that an Indiana-born judge of Mexican heritage is biased against him and his attacks against the parents of Army Capt. Humayun Khan, who spoke at the Democratic National Convention, as reasons she will buck her party's nominee.

“My conclusion about Mr. Trump’s unsuitability for office is based on his disregard for the precept of treating others with respect, an idea that should transcend politics. Instead, he opts to mock the vulnerable and inflame prejudices by attacking ethnic and religious minorities,” she wrote.

She expressed concern about Trump's potential effect on American foreign policy, saying, "His lack of self-restraint and his barrage of ill-informed comments would make an already perilous world even more so." She criticized Trump's lack of commitment to America's allies on the same day 50 GOP security officials signed a letter that said Trump is a risk to "our country's national security."

Collins wrote that she hoped the Republican nominee would “tone down his rhetoric” for the general election and apologize for past oversteps, but said: “The unpleasant reality that I have had to accept is that there will be no ‘new’ Donald Trump, just the same candidate who will slash and burn and trample anything and anyone he perceives as being in his way or an easy scapegoat.”

She also said she will not support Hillary Clinton.

Collins joins Sen. Mark Kirk of Illinois and Reps. Adam Kinzinger of Illinois, Richard Hanna of New York and Scott Rigell of Virginia as Republican members of Congress who aren’t backing Trump. Others have yet to commit themselves.

Evan McMullin, a former Republican House staffer and operations officer for the CIA, also recently announced his bid for the presidency, trying to capture disillusioned Republicans.

Collins, who is not up for reelection this year, is considered one of the most moderate Republicans in the upper chamber.