Ron Paul is still hated by a large part of the Republican voters whose overriding desire is to have a war with Iran. Those voters won't be satisfied until the Russians and Chinese are raining down nuclear weapons on American cities. The main driver of these Republican voters is "Let's stop the prophecies of Ezekial 38 (War of Gog and Magog) by incinerating the whole world RIGHT NOW". In other words, their thinking is "We have to have a nuclear war to stop a nuclear war".
Unfortunately, I fear the sane voters are outnumbered by the insane voters.