The fact of the matter is, it doesn't matter what republicans do or don't do if the people who vote for them only watch Fox News and don't see this as a bad thing. Democrats can hammer all they want, the voters they need will never see the criticisms and genuinely think democrats are "as bad" or evil or something stupid

You can get your message out in many different ways. Fox News is just one (although a fairly important one). I’m specifically referring to campaign ads, people knocking on doors etc. A sizable chunk of the American electorate is neither Democrat nor Republican so swinging these voters + energizing the Democrat base can form a powerful coalition capable of winning elections, especially in purple states.

This is really interesting. I wonder if legalization of marijuana is a hot button issue in Georgia. If it is favorable it could increase the turnout for Democrats in the runoffs. I'm also thinking that those who are strongly opposed to legalization could be convinced to turn out. I'm not sure if this is any indicator but the governor of Georgia gets pretty low marks from NORML.[1]

1. https://norml.org/us-governors/georgia/