I don't think SW has a large enough membership to make paying staff to write propaganda worthwhile.
If it were, then the Republicans would be at it just as vigorously as the Democrats.
There are a few characters here whose posts are always political, and never anything else. One is a Dem and three are Reps.
I don't believe any of them are paid.
I think they are just people who strongly believe they are right and are desperate to try to find anyone they can convince. I've seen zero evidence that anyone has been influenced by a single thing any of them has said.
The 3% of citizens who are swinging voters tend to be independent thinkers. They will do their own research and decide according to the past records of the candidates, the present conditions of the country, and their own values.