I expect that they have or had a pre-arranged deal with someone at the FBI, who would have made sure their investigation went on at least as long as the Mueller investigation into “Russian collusion”.
They felt very confident that the FBI would be sure the Kavanaugh confirmation was delayed at least until after the mid-terms, if not forever.
JMHO
“someone at the FBI, who would have made sure their investigation went on at least as long as the Mueller investigation into Russian collusion”
Bump!