They are going with the "if you are religious, you have to be a Democrst" argument, which is obviously preposterous.
According to them, religious people support abortion, and support anarchy (no borders, no enforcement of democratically passed laws, defunding of police) and oppose science.
They are trying to use religion as a club to beat people into submission / to try to shame people to support their political party. Surely they have to see how insane that is ... how it is opposite reality and common sense ... and yet they do not.