Won’t happen. Evidently there is an old law on the books that if you are called or asked to serve in Washington you are still a citizen of Chicago, WLS was talking about it yesterday, If there is even s whiff of a law like that he is a shoe-in to be allowed, which means he will win it all and replace Daley I think.
The statute reference in your past message cites from the Election Code with respect to eligibility to vote. There is an entirely different statute concerning eligibility to run for elected office contained in the Municipal Code.
A person could be theoretically eligible to vote (based upon a thirty day residency requirement) while being ineligible to run for office for not maintaining a residence for a full year.
These are meaningful legal distinctions with a difference.