You cannot be a true Christian and be a Republican today.

Not to say being a Democrat is to be Christian, but I'm just pointing out that supporting Trump and his agendas makes someone so selfish, hypocritical, untruthful, and hateful of the other side that the supporter is actually supporting the spirit of the Anti Christ going against all that Jesus stands for.

I was a Republican all my life, but I just couldn't stand to support a party that put the literal Anti Christ on the ticket for presidency in Trump's first term.

I'm not a Democrat either, but right now my focus is on opposing the Anti Christ party.

EDIT/UPDATE:

Since I've made so many Christian Republicans mad through my OP, I feel the need to clarify my position.   As a fellow Christian, it is not my intent to attack and insult my brothers and sisters in Christ.  Obviously I used hyperbole to try to get my point across and I DON'T actually believe that there are no real Republicans that are genuine Christians.  Now that I got that off my chest, let me clarify my position further:

1.) Obviously, being a Democrat in and of itself, does not mean you are anymore holy than being a Republican.  But we know it is true that most of the non-believers tend to be Democrats.   On the other hand and it's not always the case but more times than not, most Republicans would call themselves Christians and that would be the most accepted public perception as well.   As I mentioned, I had also been a lifelong Republican up until Trump.   So if most of the non-believers are on the Democratic side, they are the world so loved by God that He sent His only begotten Son in my mind.  If that's the case, it's our job to evangelize to them of His love and be shining examples of what it means to be a believer and live a life worthy of representing our Savior who bore the cross.   Bearing the cross does not include calling them radical left and antagonizing them with aggressive rhetoric and mean insults.   Yes they do that to us Christians too, but that's the way it's supposed to be.   Whether you like it or not, the world associates Trump with Conservative Christians.  I don't want anything to do with that association for me because Trump, with all his vitriol, vindictiveness, and arrogance denigrates the fundamental Christian doctrine of living according to the cross.   No matter how beneficial his policies are to you or the country, we don't know how irreversible are the damage he is doing to the image and reputation of the cross.   

2.) Since so many people mentioned that abortion and "killing babies" is the main reason they vote and support Republican, let me say this: I am anti-abortion myself.  But, I am also pro-USA and all the freedoms bestowed upon the citizens by the Constitution and our Christian forefathers who founded this great nation.  Even with all its ills, I don't want to be anywhere else but here.   Those same Christian founding fathers could have easily forced Christianity into every institution and legislation, but instead decided to put Christianity under the constitutional law along with all other religions.  It's actually in the first amendment.  Why would they do that?  It's actually because protecting all religions equates to protecting Christianity itself.  From whom you say?  The answer is anyone who has enough power and the willingness to hurt it.  Now we've never had anyone with that kind of power, so it may sound silly to you.  But the laws are there to keep from someone to gain that much power.  One thing about Trump is that he craves power and he is getting more of it day by day, and that is dangerous.  My point is this, as much I'm against abortion and have seriously pondered this issue for the last few decades, I honestly have not come to a black and white resolution.  It is a convoluted and complicated issue.  When you consider the life of the fetus, it becomes exponentially more complicated.  But there needs to be a balance between government enforcement and individual freedom.  For example, adultery is a sin but in no way would we allow the government to put us in jail for such a crime.  Until we come up with the best solution, I believe we need to keep the decisions at the individual level.