I challenge people not on the right when the data don't support what they're claiming, so I ought to be fair and report when the data do back them up. Matt Iglesias and Richard Hanania recently claimed on Twitter that Trump supporters are fatter than (woke) Democrats. The table below (GSS data) shows that the average Trump voter was about 6 pounds heavier than the typical Hillary supporter in 2016.
UPDATE: While lying in bed this morning, I realized I needed to look at the sexes separately since women were more likely to vote for Hillary, and they weigh less. I see that a commenter was thinking the same:
You can see that while male Trump supporters weigh more, female Trump supporters weigh less than Hillary voters. Maybe later I can take height differences into account.
UPDATE: Not much height difference: