* Tribune…

A radio ad in which President Barack Obama endorses Mayor Rahm Emanuel for re-election will begin airing Monday in Chicago.

“If you want a mayor who does what’s right, not just what’s popular, who fights night and day for the city we love, then I hope you’ll join me. Vote for Rahm Emanuel on Tuesday, February 24th,” Obama says in the 60-second radio spot. […]

“Before Rahm Emanuel was mayor of Chicago, he was a key part of my team at the White House,” Obama says. “And let’s be honest, at times the guy can be a little hardheaded. But there’s a reason Rahm fights as hard as he does. He loves our city, and he believes every child in every neighborhood should have a fair shot at success.”

“Chicago had the shortest school day of any American city until Rahm insisted that our kids get the same educational opportunity as other kids,” Obama says. He goes on to tout Emanuel’s move to make full-day kindergarten standard, and to gradually raise the minimum wage in Chicago to $13 an hour by 2019.

* The ad is here. And he certainly has the money to air it widely…

It’s not the only time Emanuel has gotten campaign contributions from people who have benefited from actions he or city agencies or pension funds have taken, according to a Chicago Sun-Times examination of the nearly $30 million amassed so far by: the mayor’s campaign committee; a second campaign fund he controls; and a super PAC that supports Emanuel and aldermanic candidates he backs.

About 5 percent of that total — $1.7 million — has come from developers; from employees of companies that do business with City Hall, city pension funds or city agencies; and from Chicago’s two financial exchanges, which Emanuel has supported by speaking out against proposals that would tax stock and futures trades.

* The Question: Sneed…

First lady Michelle Obama’s endorsement didn’t help Gov. Pat Quinn in November, so will her husband’s endorsement help Rahm?

Take the poll and then explain your answer in comments, please.