President Trump is holding a rally tonight in Huntington, West Virginia. This morning the president promised “a big announcement” would take place at the rally:

https://www.youtube.com/watch?v=5-psCZJnvCo

The NY Times reports the big announcement is that Gov. Jim Justice of West Virginia is switching parties:

Gov. Jim Justice of West Virginia, a Democrat who was elected last year even as President Trump carried the state by 42 points, is expected to announce Thursday night at a rally with Mr. Trump that he is changing parties, according to three sources familiar with the plans…

Mr. Justice’s decision to change parties will further isolate Senator Joe Manchin, a West Virginia Democrat and himself a former governor. Mr. Manchin has resisted the entreaties of Republicans to change parties and add to the two-seat Senate majority. Some Trump administration officials, eyeing Mr. Manchin’s seat, also had hoped to put him in the cabinet, but he has declined all overtures. Now he must stand for re-election in 2018 without the help of a friendly governor.

CNN notes that this switch will give GOP governors a 34 to 15 advantage over Democrats. Governor Bill Walker of Alaska is an Independent. You can watch the rally live below:

https://www.youtube.com/watch?v=XgDCcYSD1KI

Update: Here the announcement:

JUST IN: West Virginia Gov. Jim Justice announces he's switching from the Democratic to the Republican party https://t.co/CfIFq7BJJI pic.twitter.com/NxZy99nLzT

— ABC News Politics (@ABCPolitics) August 3, 2017