Fox News Poll: Bush, Walker, Carson top GOP pack, support for Clinton down

(FOX NEWS) - National security is a much bigger issue for Republicans this time than during the last primary. And more GOP hopefuls make it official -- yet they barely move the needle. Bernie Sanders nearly doubles his numbers and support for Hillary Clinton dips -- even as Democrats say they're not concerned about allegations of her dishonesty.

These are some of the findings from the latest Fox News poll on the 2016 presidential election.

There's no true frontrunner in the race for the GOP nomination - and not all the candidates in the poll have declared yet. The new poll, released Wednesday, finds three Republicans receiving double-digit backing from GOP primary voters: former Florida Gov. Jeb Bush and Wisconsin Gov. Scott Walker each receive 12 percent and neurosurgeon Ben Carson gets 11 percent.

View the full results here