One reason the election seems so close at this hour is that Donald Trump has been able to assemble key groups that Republican candidates depend on. One in particular are white evangelical voters, who are solidly in the Republican camp this year, despite a campaign focusing little on the social issues that have long cemented this group’s loyalty to the G.O.P.

The NBC News Exit Poll shows Donald Trump winning about 80 percent of the votes of white evangelicals, about the same as Mitt Romney in 2012.