Biden, Clinton and the Medicare-Eligible Primary That Could Be

Barack Obama was a 40-something fresh face when he won the presidency in 2008.  He's gotten older in four years, but he was up against another older man -- Mitt Romney -- to keep his job. But Hillary Clinton and Joe Biden -- two of the top potential Democratic replacements for Barack Obama four years from now -- will be either in or approaching their 70s when the next presidential election rolls around. Related: A new ABC News/Washington Post Poll finds Clinton with a 19 percent favorability...Full Story