Revolt in 2100, by Robert A. HeinleinRead about the other entries on the list.
This set of linked stories collectively tells the tale of a future America fallen into theocracy and tyranny, sparking a Second American Revolution to throw off the yolk of fundamentalist religious zealots, and the immediate aftermath of that battle. Interestingly, some of the stories set after the revolution depict the resulting society from the point of view of characters who are unhappy about this course of events, and who reject the new secular society that rises from the chaos. There’s only a few decades to go before the year 2100, so there’s still plenty of time to see a theocracy take power. The line on Heinlein being an accurate prognosticator remains pretty much 50-50.