Sen. Barack Obama "in recent days has sprinted ahead in the endorsement derby against Hillary Rodham Clinton when it comes to a certain breed of Democrat -- politicians who have won statewide in places where Republicans dominate presidential politics," The Politico observes.
Among the barrage of prominent red state politicians to back Obama: Arizona Gov. Janet Napolitano, Sen. Ben Nelson of Nebraska and Sen. Tim Johnson of South Dakota.
"What all three politicians have in common is that they are Democrats who have cracked the code in getting elected in states where Republicans historically have triumphed at the presidential level. George W. Bush won these states both times."
However, CQ Politics notes that there are still more Senate Democrats undeclared
than publicly backing either Obama -- with six colleagues in his corner -- or Sen. Hillary Clinton, endorsed by 10 fellow senators.