Caitlyn Jenner better reconsider making a run for the U.S. Senate ... at least according to her ex-wife, Linda Thompson.
We got Linda, who was married to Caitlyn for 5 years, outside their son Brandon's Tuesday night gig at L.A.'s Belasco Theater -- and asked her about the political buzz.
Caitlyn said this week she's been mulling over a Senate run, but it's clear Linda won't be voting for her if she does.
She'll happily give CJ a good hearty laugh though!