Beyond evangelicals, Trump and his allies courted smaller faith groups, from the Amish to Chabad

A social-media tribute to Coptic Christians. A billboard in Amish country. A visit to a revered Jewish gravesite.

While Donald Trump's lock on the white evangelical vote is legendary, he and his campaign allies also wooed smaller religious groups, far from the mainstream.

As it turned out, Trump won by decisive margins, but his campaign aggressively courted niche communities with the understanding that every vote could be critical, particularly in swing states.

Voter surveys such as exit polls, which canvass broad swaths of the electorate, aren't able to gauge the impact of such microtargeting...