The political world was caught off-guard Tuesday by Richard Daley's announcement that he would not seek a fourth term as Chicago mayor. If Daley's out, who's in? What about White House Chief of Staff Rahm Emanuel, who told interviewer Charlie Rose earlier this year that the mayor's office "has always been an aspiration of mine"? On Twitter, users weighed in on a potential Emanuel candidacy, and even suggested a few alternatives:


Rahm Emanuel now aloft and Chicago-bound in Balloon Boy device hidden under Rose Garden shrubbery.less than a minute ago via tGadget



oprah's retiring after this season, right? could she run. it would make a crowded field with her, rahm, burris. blago, ditka and alan keyesless than a minute ago via TweetDeck



How many more Daleys are there in the pipeline? I assume these guys are procreating...less than a minute ago via HootSuite



Alan Keyes for Mayor of Chicago. In your heart, you know he has a birth certificate.less than a minute ago via TweetDeck



I'm for Ozzie Guillen as mayor of Chicago.less than a minute ago via web



Harold Ford moving to Chicago.less than a minute ago via TweetDeck



Is there some reason to believe the voters of Chicago are eager to elect Rahm Emanuel?less than a minute ago via TweetDeck





.@mikeallen @jmartpolitico Seriously, what does a Chicago Mayor whose name is Richard Daley move on to? Taking all nominations...less than a minute ago via web


Barack Obama is president because winning the White House was easier than unseating Mayor Daley. So this is big news.less than a minute ago via Brizzly