You should probably disagree on something. Something pretty big. Something of substance.
If you identify yourself with a certain political party, be it the Whigs or the Tories or the Green Party, there should be something that clashes with your Christian worldview.
If not, then it’s quite possible that your political views are shaping your views of Christianity more than your Christianity is shaping your politics.
If there’s that much overlap, there’s a serious problem with your “Christian worldview.” I can’t think of a political party anywhere in the world that has more than a 10% overlap with a Christian worldview. Of course, any variance between the Christian worldview and the views of my favorite party are all culturally based and obsolete now that we’re out of the 1st Century, right?
Robert, I was admittedly generous in my drawing. Not sure that I’d put it as low as 10%, but I doubt it should be as high as drawn.