Challenge: Candidate's address on petition

State Rep. Deb Mell's (former Gov. Blago's sister-in-law) petitions are being challenged. She is registered to vote at a different address than the one stated on the petitions she circulated (and, presumably, on her statement of candidacy). The law here is not clearly defined, though I think she has a big problem. From the Sun-Times:

A challenge was filed Monday with the State Board of Elections against Rep. Deborah Mell (D-Chicago) by a rival in the Feb. 2 primary, Joe Laiacona.

The basis for his objection is that Mell is not registered to vote at the address she listed as her primary residence, as Illinois election law requires, said election lawyer Richard Means, who represents Laiacona.

“This is a very common amateur mistake. But one would think as a sitting state legislator, she isn’t an amateur,” Means said.