Mitra was elected congressman representing Palawan for two terms from 1965 to 1973; he resigned during his second term to run for the senate and was elected senator in 1971, only to find his term cut short by Martial Law.
Mitra was elected congressman representing Palawan for two terms from 1965 and was minority leader within five years. He resigned during his second term to run for the senate and was elected senator in 1971, only to find his term cut short by Martial Law.