Complex sentence: In the prolonged primary battle that ensued, during which she received more than 18 million votes, Clinton ultimately lost the nomination to then Senator Obama, who would go on to win the general election against Arizona Republican Senator John McCain on November 4,2008.
Split into simpler sentences: In the prolonged primary battle that ensued, during which she received more than 18 million votes, Clinton lost the nomination to Obama. Obama won the general election against Arizona Republican Senator John McCain on November 4,2008.