In my own experience inside political parties (granted, small ones in Europe rather than a big US one) is that actual merit is almost never how people are selected for most responsabilities, especially at a local level.

You're not going to get the same quality of work out of people who basically volunteered to do something or got picked because they're mates of the guy or gal running the local party office, and are doing it for free, than you would get when the necessary skills are determined, an advert for a PAID position is posted with those skills and from the candidates responding to it one is selected via a half-way decent interview process.

Judging by the looks of that poster that's very much an amateur job done by a local voluntary, not something created at national level where it's more likely (at least for big parties, not so much for smaller ones) that people are actually employed and were properly selected to do it (not that there's not plenty of cronyism at national level in political parties, but that's not usually for what are seen as "lowly" "auxiliary" positions in a Political Party such as a Graphics Designer position would).

Then, of course, on top of that comes the "small detail" that the average level of formal Education and even breadth of Life Experience is significantly lower in the Far Right, so the average Republic Party amateur is more ignorant at all levels than the average Democrat Party amateur.