Complex sentence: Nerren then defeated Graves in the second round of balloting on December 8,7,390 (53.5 percent) to 6,412 (46.5 percent).
Split into simpler sentences: Nerren then defeated Graves in the second round of balloting on December 8. The vote was 7,390 (53.5 percent) to 6,412 (46.5 percent).