If you want to clean up politics, the most fundamental way is for each political party to reject nominating those wealthy businessmen or local factional elites just for the sake of winning. This is what is really meant by fulfilling the party's responsibility to oversee things.
要淨化選風，最根本的方法，還是各政黨絕不要為了求勝，去提名那些財力雄厚卻不適任的金牛、派系角頭等等，這才算盡到政黨監督的責任。