Or. Const. art. IV, § 8

(1)(a) Except as provided in paragraph (b) of this subsection, a person may not be a Senator or Representative if the person at the time of election:

(A) Is not a citizen of the United States; and

(B) Has not been for one year next preceding the election an inhabitant of the district from which the Senator or Representative may be chosen.

(b) For purposes of the general election next following the applicable deadline for making a final apportionment under section 6 of this Article, the person must have been an inhabitant of the district from January 1 of the year following the applicable deadline for making the final reapportionment to the date of the election.

(2) Senators and Representatives shall be at least twenty one years of age.

(3) A person may not be a Senator or Representative if the person has been convicted of a felony during:

(a) The term of office of the person as a Senator or Representative; or

(b) The period beginning on the date of the election at which the person was elected to the office of Senator or Representative and ending on the first day of the term of office to which the person was elected.

(4) A person is not eligible to be elected as a Senator or Representative if that person has been convicted of a felony and has not completed the sentence received for the conviction prior to the date that person would take office if elected. As used in this subsection, "sentence received for the conviction" includes a term of imprisonment, any period of probation or post-prison supervision and payment of a monetary obligation imposed as all or part of a sentence.

(5) Notwithstanding sections 11 and 15, Article IV of this Constitution:

(a) The office of a Senator or Representative convicted of a felony during the term to which the Senator or Representative was elected or appointed shall become vacant on the date the Senator or Representative is convicted.

(b) A person elected to the office of Senator or Representative and convicted of a felony during the period beginning on the date of the election and ending on the first day of the term of office to which the person was elected shall be ineligible to take office and the office shall become vacant on the first day of the next term of office.

(6) Subject to subsection (4) of this section, a person who is ineligible to be a Senator or Representative under subsection (3) of this section may:

(a) Be a Senator or Representative after the expiration of the term of office during which the person is ineligible; and

(b) Be a candidate for the office of Senator or Representative prior to the expiration of the term of office during which the person is ineligible.

(7)(a) Except as provided in paragraph (b) of this subsection, a person may not be a Senator or Representative if the person at all times during the term of office of the person as a Senator or Representative is not an inhabitant of the district from which the Senator or Representative may be chosen or which the Senator or Representative has been appointed to represent. A person does not lose status as an inhabitant of a district if the person is absent from the district for purposes of business of the Legislative Assembly.

(b) Following the applicable deadline for making a final apportionment under section 6 of this Article, until the expiration of the term of office of the person, a person may be an inhabitant of any district.