(1)(a) Each candidate, the treasurer of each political committee, the treasurer of each petition committee and each person that makes independent expenditures in a total amount of more than $250 in a calendar year shall keep detailed accounts. The accounts shall be current as of not later than the seventh business day after the date of receiving a contribution or making an expenditure or independent expenditure with respect to all contributions received and all expenditures or independent expenditures made by or on behalf of the candidate or committee that are required to be reported under ORS 260.044, 260.057, 260.076 or 260.078. Subject to ORS 260.085, the accounts shall list all information required to be reported under ORS 260.083.
(b) This subsection does not apply to candidates for political party office.
(2) Accounts kept by a candidate, a treasurer of a political committee, a treasurer of a petition committee or a person that makes independent expenditures in a total amount of more than $250 in a calendar year may be inspected under reasonable circumstances at any time before the election to which the accounts refer or during the period specified for retention of the accounts under subsection (3) of this section by any opposing candidate or the treasurer of any political committee for the same electoral contest. The right of inspection may be enforced by writ of mandamus issued by any court of competent jurisdiction. The treasurers of political committees supporting a candidate may be joined with the candidate as defendants in a mandamus proceeding.
(3) Accounts kept by a candidate, a treasurer of a political committee, a treasurer of a petition committee or a person that makes independent expenditures in a total amount of more than $250 in a calendar year shall be preserved by the candidate, treasurer or person for at least two years after the date the statement of the contribution or expenditure is filed under ORS 260.057 or the independent expenditure is made.