Third party assures that the unindicted criminal wins.
Don't believe HotAir's spin. If Coburn is so "anti-establishment" but is being coaxed by the very establishment to run for them, then he's just as corrupt and worthless as all of the other Republicans the GOPe wants to run.
Trump in the general election will have the Reagan coalition and Dems who despise Hillary. Coburn will get the same or lesser amount of support and votes as John Anderson did in 1980.