Republican gubernatorial candidate Dennis Richardson focused on the consulting business of Cylvia Hayes, Gov. John Kitzhaber's fiancee.
Supporters and opponents of Measure 92 have raised a total of $16.7 million and have spent $13.4 million so far.
Michael Bloomberg donated the money in support of the "Top Two Primary" initiative.
The opponents of labeling genetically modified foods reported contributions of $7.3 million thus far; proponents show $4.8 million in contributions.
City Council will decide whether the Rose City will join 17 other Oregon cities in preemptively taxing legal recreational marijuana.