ALL THEY KNOW: Forty percent of Americans have never lived when there wasn't a Bush or a Clinton in the White House.
POLITICAL FATIGUE: With Hillary Rodham Clinton hoping to tack another four or eight years on to the Bush-Clinton-Bush presidential pattern, talk of Bush-Clinton fatigue is increasingly cropping up in the political debate.
HARD DAYS: The families have built up strong "brand" recognition for their names making it harder for newcomers to compete, according to one expert.