Complex sentence: Both sides knew that there was no chance of victory for either candidate, and the Half-Breeds chose a compromise candidate, James Garfield, who won the party's nomination on the thirty-sixth ballot, Ackerman (2003), p120-121.
Split into simpler sentences: Both sides knew there was no chance of victory for either candidate, and the Half-Breeds chose James Garfield as a compromise candidate. Garfield won the party's nomination on the thirty-sixth ballot, Ackerman (2003), p120-121.