A head to head comparison of the Oregon 2016 General Election gives us an idea of the break down of the voters.
Ron Wyden received 1.1M (56.7 %) votes, beating Mark Callahan who gained 651.1k (33.4 %) by 454k votes in Oregon.
Ron Wyden won 18 counties out of the 36 counties that make up Oregon. The record shows that Mark Callahan won 18 counties.
During the 2016 general elections, over 2M total number of votes were cast. Eric Navickas got 48,823 (49k) over Jim Lindsay 23,941 (24k). He won the popular vote by 48,823 (49k). His victory in the State of Oregon (with 48,823 votes) represents 50.0% of his popular vote victory.
Top 15 Counties in General Elections
All Candidates (Senate General Elections)
These 15 counties play an important role in these Primary elections. If a candidate, can get a sizable majority in the largest counties (Multnomah, Washington and Clackamas), it becomes very difficult to win majorities in the smaller counties without voter outreach and increased voter participation in them.
Top 15 Counties Comparison in General Elections
Multnomah, Washington and Clackamas, three of the larger counties voted in favor of Ron Wyden, giving him a 344k vote advantage.