The conservative strategy has been to polarize politics in America in order to have a very aligned power. This means that if you aren't 100% behind them, then you are an enemy to them.

It is only through this that the GOP can both say that they are protecting individual freedoms but limiting or taking them away (of course opponents to this will be quick to point out the one and only counter point which is fighting against restrictions of the 2nd Amendment and only that), say that they are for smaller government but yet want private companies to be regulated that attempt to censor hate and misinformation (which has nothing to do with the 1st Amendment when it comes to non-government entities) yet still say that they are for businesses to operate as unrestricted as possible. They are anti-union because they are corrupt and take away accountability yet strongly support the worst of the worst of unions -- the police unions. The GOP constantly cries that there's a nanny government, yet they push laws to restrict people's choices, censor libraries and try to tear down citizen protections. The GOP cries that this country's deficit is out of control but when they are in power, they over spend. They complain that public schools indoctrinate but at the local and state levels attempt to indoctrinate in public schools. They talk about needing to stay in power to turn America around, yet when empowered in all three federal branches fails to pass meaningful legislation and run the government that they are overseeing and yet blame the government because they will eat each other alive for their own individual gains.

There so much more but the GOP is a party of hypocrites. Without polarization mixed with some fear mongering their party would likely cease to exist with any real power because they do not stand for the ideals that their own voting base supports.

The GOP constantly tries to create an environment of being constantly under attack and spews hate. Their voter base is simply a product of that.