Shannon Stapleton / Reuters Michael Reagan campaigns in 2012 with then-U.S. Republican presidential candidate and former Speaker of the House Newt Gingrich, left, and his wife, Callista, center.

Ronald Reagan’s son is lashing out against Donald Trump, expressing his disbelief and disappointment that the man running for president on the GOP ticket technically represents the same party his father once did.

“No way do I or would my father support this garbage,” Michael Reagan wrote in a tweetstorm Sunday night, linking to a Politico article dissecting Trump’s latest comments on Hillary Clinton, his opponent, whom he accused of being unfaithful to former President Bill Clinton.

“If this is where he is going I cannot follow him,” he continued, adding that his father would have probably reacted by saying something like: “I didn’t leave the Party, the Party left me.”

Reagan also urged Reince Priebus, chairman of the Republican National Committee, to take a stand against Trump.

“Getting [to] a Point with Trump where I just don’t give a shit,” Reagan wrote.

A selection of his tweets are below:

My father would not support this kind of campaign,if this is what the Republican Party wants leave us Reagans out.Nancy would vote for HRC https://t.co/jkjKBvlwHa — Michael Reagan (@ReaganWorld) October 3, 2016

Jane Wyman was my mother but I can tell u that Nancy would vote for Hillary and was appalled to hear people say he reminds them of RR. https://t.co/DKsikyfuWs — Michael Reagan (@ReaganWorld) October 3, 2016

The direction he is headed will never win him the White House...No FILTER No Potus https://t.co/Ctp6mXNtvg — Michael Reagan (@ReaganWorld) October 3, 2016

Trump has slid in the polls after a series of unfortunate events in the past week. First was his lackluster performance in last Monday’s debate. A report then surfaced over the weekend indicating that he could have avoided paying federal income taxes for 18 years. In between were his repeated attacks on former Miss Universe Alicia Machado and his comments about the Clintons’ marriage, which called his own infidelities into question.

And ironically, Trump’s campaign announced Monday that it would be giving away a Reagan print to donors, even though Trump had taken out ads in major newspapers criticizing Reagan’s foreign policy during a 1987 campaign to promote his book.

Editor’s note: Donald Trump regularly incites political violence and is a serial liar, rampant xenophobe, racist, misogynist and birther who has repeatedly pledged to ban all Muslims — 1.6 billion members of an entire religion — from entering the U.S.