How is it determined who wins a state? Is it strictly based on the popular vote within that state, or is it more complex, like each state has its own electoral college type system with certain geographic subregions winning a set number of votes if the candidate wins in that subregion?
I always assumed it was just based on total popular vote within the state, but during an election when they zoom in on a state they always show the individual counties colored red or blue. Do these county-level results actually mean anything, or are they just interesting to look at?
And do all states work the same basic way?