Johnny Carson kept his personal politics close to the vest. For the most part, so did Jay Leno and David Letterman.
That's not the case with the current roster of late-night comics.
During Election Week, they might as well have slapped "Vote for Biden" stickers on their foreheads. Their behavior may have helped liberal viewers get a sounder sleep, but it didn't result in a lot of laughs.
"Looks like we're finally sending the monster back to Mar-a-Lago," ABC's Jimmy Kimmel said Wednesday, before scolding those who voted for Donald Trump. Sidekick Guillermo Rodriguez led an intoxicated cheer for Joe Biden, urging his boss to calm down with some tequila shots.
On the same evening, Seth Meyers allowed his regular commentary, "A Closer Look," to take over half of his NBC show so he could remind his audience for the thousandth time that the current president is his worst nightmare.
"If Trump won, will you please get in a time machine and come back and kill me?" he said during the pretaped episode, adding that he was clenching so hard on election night that he suddenly had six-pack abs.
John Oliver's Emmy-winning HBO series "Last Week Tonight" expanded to 45 minutes last Sunday so the host had extra time to eviscerate both the president and William Barr, comparing the attorney general to a constipated Charmin bear.
No one in late night has campaigned harder for the Democrats than Stephen Colbert.