Complex sentence: These killings were shortly followed by the more significant White League insurrection in New Orleans, where they hoped to install Democrat McEnery as governor, who had been a contender in the disputed state election of 1872.
Split into simpler sentences: These killings were followed shortly by the more significant White League insurrection in New Orleans, where they hoped to install the Democrat McEnery as governor. He had been a contender in the disputed state election of 1872.