Democrats break GOP supermajority in Iowa Senate by flipping Republican seat in special election

Catelin Drey's win gives her party an additional seat, bringing the number of Democrats serving in the upper chamber to 17 and breaking Republicans' two-thirds supermajority.

Iowa Democrats scored a significant victory Tuesday by flipping a Republican seat in a special election and breaking the GOP supermajority in the state Senate.

Catelin Drey won the Sioux City-area district with 55% of the vote to Republican opponent Christopher Prosch's 44%, according to unofficial results with all precincts reporting.

Democrats will now hold 17 seats in the Senate, compared with 33 for Republicans, breaking the GOP's two-thirds supermajority.

Democratic National Committee Chair Ken Martin celebrated Drey's victory in a district Donald Trump won last year.

“Iowans are seeing Republicans for who they are: self-serving liars who will throw their constituents under the bus to rubber stamp Donald Trump’s disastrous agenda — and they’re ready for change," Martin said in a statement.