JCOPE's "2013 Ethics FilingInstructions" states under "family" that only legally married spouses need provide financial data as part of a public official's annual financial filing.
There are 19 separate worksheets imbedded in the Form 1040 instructions, and the possibility of filing numerous other forms, depending on the circumstances.
Read the instructions carefully, however, since the place of filing depends on the type of original return (EZs and NRs, for example, have a different address) and where you live.