The chair of the Republican National Committee, Reince Priebus, was biased against Donald Trump in the primaries. He failed in his bias and Donald Trump won the nomination. Nevertheless, Reince Priebus still has his job as head of the Republican National Committee.
The chair of the Democratic National Committee, Debbie Wasserman Schultz, was biased for Hillary Clinton in the primaries. She succeeded in her bias and Hillary Clinton won the nomination. Debbie Wasserman Schultz no longer has her job as head of the Democratic National Committee.