Donald Trump's three oldest kids, Donald Jr., Ivanka, and Eric Trump, have all been active members of his campaign. The kicker is that only Donald Jr. is able to vote for him in the New York primary next Tuesday.

Why? Because it's a closed primary, where only people registered as Republicans or Democrats can vote for their party.  Donald Jr. is a registered Republican, but Ivanka and Eric are NOT, so they'll have to sit it out. They're Independents, and have both given money to politicians in both parties, just like Donald has.

Donald was asked about it on "Fox & Friends" yesterday, and he said, "They were, you know, unaware of the rules, and they didn't register in time. So they feel very, very guilty. It's fine. I understand that. They have to register a year in advance and they didn't. So Eric and Ivanka, I guess, won't be voting."

The deadline was actually October 9th.