Complex sentence: It was Godbout's third (and final) loss to Duplessis in a general election, and the second in a row, versus one victory against Duplessis years earlier in the 1939 election.
Split into simpler sentences: It was Godbout's third (and final) loss to Duplessis in a general election, and the second in a row. He had won one victory against Duplessis years earlier in the 1939 election.