Big survey, little new information. Many independents are actually partisans. Many others just have no idea what they’re talking about. A few really do pay attention and swing anyway. The party that wins more independent votes tends to win elections. For some reason this leads the Post to conclude that “frustration with political combat in Washington and widespread skepticism toward the major parties” might be “enough to provide the spark for an independent candidacy by New York Mayor Michael R. Bloomberg” even though this is always what independents think and third parties never win.