That really doesn't make any sense. They are opposed to nuclear power because they don't perceive it to be safe (which they learned from disasters like Chernobyl and Three Mile Island), if it was perceived to be safe then they wouldn't be opposed to it. It's not like they hate the power it would give or the jobs i wold create, there is no other agenda for them to oppose it on (unless you're talking about astroturfing campaigns by alternatives, in which case I misunderstood you).
Extreme religious conservatives are another story (and I add 'extreme' because someone can be religious, conservative, and perfectly sane).