Former President George W. Bush did not vote for Republican Donald Trump - or Democrat Hillary Clinton.
Spokesman Freddy Ford says the most recent Republican president voted "none of the above for president and Republican down-ballot".
That means Bush voted for Republicans in congressional and local races.
It's not a complete surprise.
The Bush family includes the two most recent Republican presidents but neither endorsed nor campaigned for the billionaire businessman who captured the party's nomination.
Former Florida Governor Jeb Bush was a one-time favorite to win the GOP presidential nomination until Trump got into the race and branded him with a name that stuck: "Low energy."
Trump campaign manager Kellyanne Conway has suggested her candidate was hurt by not having the full weight of the Republican establishment behind him, the Washington Post reports.
On MSNBC, Conway told Chuck Todd that if Trump loses narrowly it would be "too bad" that "we have former presidents not voting for us, former nominees not voting for us".
"That's got to hurt," she said, according to the exchange reported by the Wall Street Journal.
"When you talk about growing the party, the idea was growing it, but having that base together."
The last Republican president, George W. Bush, and the party's last nominee, Mitt Romney, refused to support Trump, and Romney was especially outspoken in his disdain.