Ok, that's out of the way, I've been seeing this billboard for a bit, the whole text is:
"Please, don't vote for a Democrat
www.therepublicansong.com"
The song (warning if you choose to visit, if you choose "about the song," not only do you get the lyrics, you get an autoplay of the song) basically the song is a rant about "liberals" and encouraging people to continue doing what has not been good for this country for as long as I can remember, that is, vote on party lines. There's nothing useful accompanying the site, just an "encouragement" to not vote for a "democrat". Maybe we should all vote for the green party, should make this guy quite happy

I don't feel particularly qualified to comment on anything specific in the song past it's vague rantiness, but if you're old enough to vote, please choose based on how well the candidates match your own views and not because of the label they've stuck on themselves (or any other non-issue like 'race', gender, religion, etc.). There may have been a time when those party labels actually told a person something about what the candidate stands for, but I don't think they do any more.