Ask yourself, what is Duval's connection with the Rooty?
I like DUval as an actor but know little of whether he is politically savy or not. Most actors are not politically savy, and are real flakey people when it comes to supporting a politician.
Clint Eastwood is politically astute, even though I do not agree with his politics most of the time. Barbara Streisand is a moonbat. Matt Damen is a moon bat, etc. The Governator is politically astute, but has his flakey moments which we have seen lately.
If I were Rooty, I would not be too flattered that an actor endorses him. Its a very mixed record on whether it is positive or not.
I wouldn't vote for Rooty if John Wayne emerged into life again and endorsed him.
Duvall is a great actor. Politically he is not very involved, and his views are best described as mostly (small “l”) libertarian, but definitely not progressive / liberal.
I saw an interview with him where the subject came up - he has a head screwed on right.