Because of the hyper-distributed nature of American elections, those with doubts can often walk down the street (or catch a bus) to the elections office, start talking to people, and find out how the process works.

Also because of the hyper-distributed nature of American elections, that's a much better way to understand how they work in one's town than to look at national news about what's happening in Miami-Dade County. If you're not a citizen of Florida (much less a resident of Miami-Dade), you might as well ask how elections are run in Germany; it'll apply about as much to how they run in your town.