Obama, McCain gear up for race-based attacks

• Story Highlights
• Sen. Lindsey Graham says he expects the race card to be played plenty
  
• Obama camp says it will not repeat John Kerry's mistake with "Swift Boat" attacks
  
• Texas GOP fired a vendor making cracks about changing the White House's name
  
• Expert: Overt references risky, but subtle references "may elicit race-based reactions"
  
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