(CNN) - If Rahm Emanuel wants to run for mayor of Chicago–and it's pretty safe to say he wants to–he may have to do it without the endorsement of a big name in Illinois politics.
Senate Majority Whip Dick Durbin, the state's senior senator, declined to endorse Emanuel for mayor Sunday on CNN's State of the Union with Candy Crowley.
"I have said publicly to Rahm Emanuel, if you want to run, you can't do it from the White House. You need do it from the loop in Chicago," Durbin said, referring to the Windy City's major downtown commercial center.
"No endorsement today, though?" Crowley asked.
White House senior adviser David Axelrod said Sunday that Emanuel is "drawn to" running and is "working through" the personal implications.
"I think that he loves the city of Chicago, he's always believed that that was the greatest job there is," Axelrod told Christiane Amanpour on ABC's This Week.