(Salem, OR) -- The future of Oregon's recently approved gas tax increase is uncertain as the Secretary of State reviews nearly 200-thousand signatures submitted by the group No Tax Oregon. If enough signatures are verified, voters will decide next November whether to overturn the gas tax and other transportation-related fee increases passed by the legislature. Supporters of the taxes say the revenue is needed to fund road maintenance and prevent job cuts at the Oregon Department of Transportation. State officials have until January 29 to complete the signature verification process.