Real ID or passport seem to be the gold standard for government ID, why not have to show them to vote?
In Oregon, to register to vote a driver's license, Real ID, passport, social security number, and Birth Certificate, are "the gold standard" which you must show to register to vote in Oregon. If you are not registered to vote, you cannot vote because you won't get a ballot. Oh, and in addition you must show proof of current address when getting the Real ID or Driver's license.
Several months ago, I misplaced my driver's license and went to the DMV for a replacement. I can assure you that the above was the DMV's requirements for a replacement driver's license.