Dogbox, I don't see a problem with a political joke. It's when members feel they have to respond to correct what they see as a slur on their favoured politician or party that is the problem.
If it becomes someone's platform to repeatedly get a one sided view across, then that is a different story.
Let the political jokes come, and take them as jokes, not political messages.
Politicians are a joke, on one side they are advanced through the system of blue bloods, jobs for mates, and on the other side advanced through the commo system or through the offices of members as "speech writers" and the like and just worm their way up the through the ranks with little "real world" experience or street smarts. Our current incumbent came through those ranks of the latter, never had an "actual" job, and would be better suited as a used car salesman I reckon.
Politicians do belong in the joke section. Have a gander at the last half a dozen prime mincers we have had. You wouldn't feed any one of them, like a procession of complete dingbats!!!