Primaries

The voting weights implied by the estimated model demonstrate that
early voters have up to 20 times the influence of late voters in the
selection of candidates, demonstrating a significant departure from the
ideal of "one person, one vote."

Here is the paper, I cannot find non-gated versions.  If we were aiming for efficiency, and the saving of time, rather than democratic equity, in which state should the first primary or caucus be held?