Former Alabama Chief Justice Roy Moore has jumped to a substantial lead in the Republican runoff for the U.S. Senate, a new poll showed. Moore took 51-percent of the vote to Sen. Luther Strange's 32-percent, a JMC Analytics poll said. In last week's primary, Moore finished with 39-percent, to Strange's 33-percent. The pollster said Moore's surge was fueled by support from backers of the defeated primary candidates. Moore's campaign chairman -- Bill Armistead-- says conservatives are "uniting behind Judge Moore to drain the DC swamp." The runoff is Sept. 26. The winner will be considered a heavy favorite over Democratic nominee Doug Jones. Alabama has not elected a Democrat to the U.S. Senate since 1992.