I'm going to go out on a limb here and say that the fact that
there won't be a Durham Report before November 3 was have no effect at all on the outcome of the election. The only people who care about this report are the President's most die hard supporters, the ones who are already highly motivated to support him. No matter what the report says it would not change a single mind, largely because outside of the Trump bubble this administration has so little credibility. The fact that a GOP Congressional aide thinks the delayed report is a "nightmare scenario" just shows how completely out of touch Republican elites are from the rest of the country.