With a new poll showing that 32 percent of Democrats are eager for President Obama to be challenged by somebody in his own party, is it time for a Democrat to get into the 2012 primary? Independent Sen. Bernie Sanders said yes recently, though history frowns on challengers. Just ask the late Edward M. Kennedy who failed to knock off Jimmy Carter in 1980 as the former president faced economic troubles and bad polls similar to what Obama is up against. Pew was out with a poll analysis yesterday that said "32% of Democrats and Democratic-leaning independents say they would...
