Clackamas County today identified the temporary elections worker accused of altering ballots as Deanna Swenson, 55, of the Oregon City area.
She was "relieved of duty immediately after the alleged ballot tampering was discovered," Tim Heider, county spokesman, said in a press release.
Swenson, who is registered as a Republican, also worked previous elections, at least back to 2010, said Scot Sideras, county counsel.
Swenson is accused of filling in the names of Republican candidates on ballots where voters did not make a choice. Tampering with ballots is a Class C felony punishable by up to five years in prison and a fine of $125,000.