Weirdly enough, there doesn't appear to be a lot of crossover of support from
Fob James in the 1998 runoff to Roy Moore.
Although 1998's surge in voter turnout for the runoff (due to laws allowing people who voted in the Democratic primary to vote in the Republican runoff) was probably a sign that had this race had a runoff, there would have been a surge.
Votes cast in the first primary and the runoff
Clarke: 688 in the first primary, 3130 in the runoff
Greene: 33 in the first primary, 820 in the runoff
Washington: 208 in the first primary, 1681 in the runoff.
Despite media reports, the surges in the black belt probably benefited James. Maybe enough people realized that James would lose to Siegelman.