Parliamentary elections were held in Colombia on 26 February 1978 to elect the Senate and Chamber of Representatives.[1] The result was a victory for the Liberal Party, which won 111 of the 199 Chamber seats and 62 of the 112 Senate seats.
Within Liberal ranks, lists supporting presidential pre-candidate Julio César Turbay Ayala soundly defeated lists supporting his rival for the party's nomination, former President Carlos Lleras Restrepo. This victory confirmed Turbay's candidacy as the official Liberal candidate for the June presidential election, in which he defeated Conservative candidate Belisario Betancur.