Complex sentence: Despite the setback, three precincts in Minnesota elected McCarthy supported delegates to caucuses, to the detriment of Vice-President Hubert Humphrey, and President Johnson decided to abandon Massachusetts, giving 72 delegates to McCarthy.
Split into simpler sentences: Despite the setback, three precincts in Minnesota elected McCarthy supported delegates to caucuses, to the detriment of Vice-President Hubert Humphrey. Next, President Johnson decided to abandon Massachusetts, giving 72 delegates to McCarthy.