Complex sentence: The result was a victory for no one and the most calamitous convention in the history of the party., After "a hundred and three ballots", the winner went on to lose the election to Republican candidate Calvin Coolidge.
Split into simpler sentences: The result was a victory for no one and the most calamitous convention in the history of the party. After a hundred and three ballots, the winner went on to lose the election to Republican candidate Calvin Coolidge.