The easy joke at this moment is that if Donald Trump can’t organize his children to register as Republicans in New York State, how’s he going to out-manuver Ted Cruz or another candidate in a delegate fight in Cleveland?

Eric and Ivanka Trump won’t be eligible to vote for their father in the closed Republican Party primary after missing the deadline to register with a political party. Records from the New York State Board of Elections show that Eric, 32, and Ivanka Trump, 34, are registered voters who are “not enrolled in a party.”

The deadline to change parties for previously-registered voters was October 9. For new voters, the application had to be postmarked by March 25 to be eligible to vote in the presidential primary.

But let’s leave Ivanka Trump alone. Two days after that latter postmark deadline, she gave birth to her third child. She pretty clearly had bigger things on her mind than changing her party registration in the past year. (She did spend quite a bit of time on the campaign trail with her father in those final weeks before giving birth.)

It also seems likely that Ivanka doesn’t see entirely eye-to-eye with her father; before the campaign, she had a burgeoning friendship with Chelsea Clinton. Balancing any disagreements with her father with the desire to help him is her choice to maneuver, and speaking as an unhinged indefatigable Trump critic, there are much more fruitful avenues of criticism than Ivanka’s failure to register as a Republican in time.