Donald Trump Donald John TrumpObama calls on Senate not to fill Ginsburg's vacancy until after election Planned Parenthood: 'The fate of our rights' depends on Ginsburg replacement Progressive group to spend M in ad campaign on Supreme Court vacancy MORE's special counsel on Thursday admitted he wouldn't be voting for Trump in the GOP presidential primary in New York because he is a registered Democrat.

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"No, I am not voting in the primary; I'm a registered Democrat," Michael Cohen said on CNN's "At This Hour," adding that his inability to vote for Trump was limited to "the primaries."

Two of Trump's children — Ivanka, 34, and Eric, 32 — acknowledged this week that they didn't register as Republicans in time to vote in Tuesday's closed primary in New York, despite months of campaigning for their father.

While new voters in New York had up until last month to register to vote in the primary, registered voters had to file to change their party registration by Oct. 9 — six months ago — to cast a vote in the primary.

Ivanka, who said she was a registered independent because she wanted flexibility in supporting candidates, ripped the " onerous " rules in New York, while Eric described the flap as coming in the context of the family's first "foray into politics," saying that "we didn't realize how the whole system worked."

For his part, Donald Trump said his children feel " very, very guilty ."

"Those kinds of things seem silly. We're bringing a lot more people into the party, and the party is shutting the door on them," Jane Sanders told MSNBC's "Morning Joe" on Thursday.