With the "possible" exception of GH Bush the Republicans have not had a legitimate president since Eisenhower.
Trump beat Clinton after he was trounced in the popular vote even with the help of Russian hacking in concert with Wikileaks and the partisan FBI director's last minute false accusation. An announcement like Comey's right before an election is so unprecedented that many people believed she would soon be in jail so they changed their vote.
George W Bush beat Gore after losing the popular vote by convincing the Republican majority on the Supreme Court to stop the Florida recount and appoint GW Bush president (Jeb Bush was governor of Florida at the time)... States rights???
Reagan beat Carter by sending representatives to Iran Before the election to promise a better deal if they held on to the hostages until after the election. (Carter was ahead by 7% until negotiations failed) The Iranians released the hostages minutes after Reagan was sworn in...minutes after the inauguration!, let that sink in.
The Iran Contra "guns for drugs scandal" was Ronnie’s payoff to Ayatollah Khomeini.
Gerald Ford was the only US president never elected to the presidency or the vice presidency. He was appointed by Nixon a criminal.
Nixon undermined Humphrey by directing his campaign’s efforts to scuttle Johnson's Vietnam peace talks, which he feared could give his opponent, Vice President Hubert H. Humphrey, an edge in the 1968 election. The Vietnamese walked out of the Johnson negotiations as a result of the Nixon people's promise......Nixon won but the war dragged on for 4 more years...Nixon even pulled a fast one on Ho Chi Minh!
Nixon also paid burglars to break into the Watergate complex to collect damning information against McGovern before the 72 election even though McGovern didn't have a snowballs chance in hell that year because Nixon wanted his victory to be YUGE!
Nixon cheated....just because that’s what Republicans do...They cheat and they get away with it because Democrats and progressives don't vote in every single election the way Republicans do.