“If a president does something which he believes will help him get elected in the public interest, that cannot be the kind of quid pro quo that results in impeachment,” Dershowitz said.
So, if Trump were to frame his political opponent for murder, or fake a video that showed him to be a child molester, or have someone on his staff make a false accusation of sexual assault against his opponent, that's just fine because Trump believes his re-election is in the public interest. And that concept would apply to any politician, since no doubt they all believe their election is in the public interest.
I don't suppose any lawyers here were taught by Dershowitz, were they? If so, have you any thoughts on his views?