I'm glad Mr. Duker has somewhat come around, though in quite a condescending way, but it's quite evident that his knowledge of Feiglin's proposals comes from news reports rather than Feiglin himself.
To discard a candidate because of the loyalty of his followers rather than because of his own views, doesn't seem so reasonable. A candidate should be judged on his own merits and faults, not those of his supporters, with a possible exception when it's clear that the supporters are setting the candidate's agenda.