The Oregon Supreme Court, reversing its longstanding ban on strict campaign finance limits, ruled in favor of a voter approved Multnomah County law putting a $500 limit on campaign donations.

The court concluded contribution limits are not invalid under the state constitution.

The case has been sent back to a lower court to decide whether Multnomah County’s dollar limits themselves are too low, while tossing out the limits Multnomah County voters set on campaign expenditures.

The ruling could lead to new campaign finance limits throughout the state.

Oregon voters will vote on a proposed constitutional amendment this fall allowing limits on the flow of big money into political campaigns.

Oregon has been one of only a handful of states in the country with no limits on political donations and spending.