Barack Obama had no national primary challengers in his second nomination race in most states, including Kentucky. Who knew it would still be a tough choice for voters? Kentucky voters in the Democratic primary preferred the empty slot to the empty suit, apparently: About two out of every five Democratic voters in Tuesday's presidential primary in Kentucky chose "uncommitted" instead of voting for President Barack Obama. "I'm at a victory celebration for 'uncommitted' who performed admirably" said [state GOP chair Steve] Robertson. "I've never met the guy but know that he highly embarrassed Obama."Robertson contended that the Democrats who vote...