Robert Vaughn. With the enormous fame THE MAN FROM UNCLE gave him in the 60's, he probably
could have used it to ride into politics had he wished to. He was smart(he garnered a PhD from USC
in 1970, & wrote a dissertation on the Hollywood blacklist), & was a good liberal Democrat too. In fact
Vaughn did get a political feeler. He had become friends with Robert Kennedy, & in early 1968 RFK,
noting that a US Senate seat was opening up in California, urged Vaughn to run for it: "With your celebrity and speaking ability, you should go for it."* But Vaughn decided to stay in acting. Oh well.
(Ironically enough, that seat was later won by George Murphy).
*- Robert Vaughn, A FORTUNATE LIFE(2008), pp. 216-217. One of the better actor memoirs.