Hillary Clinton
In reply to the discussion: Sanders Folks Upset About Registration Rules in NY [View all]still_one
(98,883 posts)republicans, who never were part of the Democratic party, and change party affiliation, not because they want to be Democrats, but to screw with an opposing party's primary results.
This does not affect new registrations, but only existing ones.
Those voters who are currently registered to vote in New York, requires those registered voters to change their party enrollment prior to the registration deadline for the general election in November the year before the primary.
This is to discourage "party raiding," where activists from one party change affiliation en masse to screw with an opposing party's primary results.
In 2000 the Supreme Court of the United States struck down California's blanket primary in California Democratic Party v. Jones. Similar systems used by Washington and Alaska were also struck down in subsequent Supreme Court cases.
he United States Supreme Court held that California's blanket primary violates a political party's First Amendment freedom of association.
The key line in the decision being that, "A single election in which the party nominee is selected by nonparty members could be enough to destroy the party"
"In a 7-2 opinion delivered by Justice Antonin Scalia, the Court held that California's blanket primary violates a political party's First Amendment right of association. "Proposition 198 forces political parties to associate withto have their nominees, and hence their positions, determined bythose who, at best, have refused to affiliate with the party, and, at worst, have expressly affiliated with a rival," wrote Justice Antonin Scalia for the majority. "A single election in which the party nominee is selected by nonparty members could be enough to destroy the party." Justice Scalia went on to state for the Court that Proposition 198 takes away a party's "basic function" to choose its own leaders and is functionally "both severe and unnecessary."
https://en.wikipedia.org/wiki/California_Democratic_Party_v._Jones
While a blanket primary is not the same as an open primary, the open primary still allows for "party raiding", which is why New York in its wisdom choose not only a closed primary, but also added this additional safeguard