Whom Is This Intended to Thwart?

From the Associated Press:

RICHMOND, Va. (AP) -- If you're planning to vote in Virginia's February Republican presidential primary, be prepared to sign an oath swearing your Republican loyalty.

The State Board of Elections on Monday approved a state Republican Party request to require all who apply for a GOP primary ballot first vow in writing that they'll vote for the party's presidential nominee next fall.

There's no practical way to enforce the oath. Virginia doesn't require voters to register by party, and for years the state's Republicans have fretted that Democrats might meddle in their open primaries.

Virginia Democrats aren't seeking such an oath for their presidential primary, which is held the same day -- February 12th.

Hat tip: Jacob Hornberger