FiveThirtyEight.com also got into the puzzle-themed election spirit with some of their own Gerrymandering puzzles (one easy, one way hard). They come from Eli Ross at Brilliant.org, which also has a small selection of gerrymandering puzzles on its site.

FiveThirtyEight’s weekly The Riddler column has an excellent variety of difficult math puzzles. Scroll to the end to also get a curated collection of new puzzles appearing in the last week.