The Constitution Party’s last candidate, Chuck Baldwin, was a premillenialist for who replacement theology is totally rejected.
However, I’m sure there are presbyterian and other denominations represented in the CP as well as other parties. They tend toward replacement theology.
So, replacement theology by some members of the Republican Party means that the Republicans reject Israel?
And that's not uncommon with nascent political movements... some of the more vociferous voices will come to the fore, but eventually, as more conservatives migrate over to it, the natural leaders with traditionally conservative ideologies will rise to the top.
Replacement theology says that the Christian world replaced the Jewish people as "Israel" in G_d's eyes and inherit all His promised blessings promised to Israel because the Jewish people rejected the Messiah. It's a pretty creepy idea in my book.