"Christianity" in America is a vaguely undefined word. Not by design but by what it has become. The flavors of religions that use the word Christian are many and varying in beliefs and persuasions. Then there's the Bible teachings which are reinterpreted over and over usually based on the defining or redefining one word. In that perspective "many are called; few are chosen" makes sense. How many is a few? we don't know. How many is "many", again we don't know for sure. I embrace Christianity because I am "known" by God. (In that day he will say to many go from me I never knew you") (side note: I can trace that in my life all the way back to when I was 8 years old; and will expand on that sometime)
Too many people who claim Christianity that will still not make sense to them. But I say emphatically that God makes the choice and I believe He does that not out of random desires of His own, but by being able to see within the heart of all men. He then chooses, sees us as we are, then He spends what time we have on earth creating us into what He has imagine for us, and may work in us to bring other people with us when that time comes. Man cannot save himself. It might very well be at that moment in a dark part of our life making that realization we begin to sense the power of God and we grow from there.
To many "Christians" believe salvation and Gods favor can be accomplished through rigorous religious activities and even political movements. God is not interested in anyone's politics, big church, money, or any of that kind of status, as those are temporal things which fade as quickly as we pass through time in this world. Love one another. Don't let something inane distract you. God didn't save you to stop abortion or give you favor because you say you "love Israel," or dozens more things many American evangelicals believe are cornerstones that make them Christians.
Love the Lord your God with all your heart, with all your soul, and with all your mind and then love your neighbor as yourself.’
On these two commandments hang ALL the Law and the Prophets. Again, it doesn't say politics as God in His sovereignty over nation will take care of that. The only thing that holds Him back are the people trying to do it all themselves for themselves or their country. God doesn't need your help or mine. And the days of yours or any country is numbered.
