Simplify the following text for a Grade 13 native English-speaking person.
Original: With deep fissures in the party on this question , the anti-slavery faction successfully prevented the renomination of its own incumbent President Fillmore in the 1852 presidential election ; instead , the party nominated General Winfield Scott .
Simplified: The anti-slavery faction successfully prevented the nomination of its own incumbent President Fillmore in the 1852 presidential election . Instead , the party nominated General Winfield Scott , who was defeated .