How does the game determine what your/their religion is?

[vra379971]

So, in a situation where you have no state religion like Civ 4, or have not founded one, how does the game determine what a civ's religion is?

I presume its the amount of cities with X religion? Or is it the amount of followers that follow one over another, so that if you have one big city with 40 followers and 6 cities with only 20 followers combined, then the 40 wins?

 

[Browd]

Whatever religion has a majority of followers in a majority of your cities. Minority followers of religions are ignored, and size of cities is irrelevant.