On March 24, the 5th circuit upheld the right of the Texas Democratic Party to bar presidential candidates from its primary, unless that candidate signs an oath to “fully support” the party’s eventual presidential nominee. Kucinich v Texas Democratic Party. The Court said the oath is unenforceable. Thanks to Mark McGinnis for this news. Dennis Kucinich had refused to sign the oath in 2008 and had therefore been left off that primary ballot.
Oaths about the Democrat Party are already freely given by many citizens and, especially, taxpayers who are aware of what Democrat Party policies lead to.
I can see that a suit would be necessary if anybody tried to void our First Amendment rights to express oaths about the Democrats and their activities.