FoX News polls were reliable in 2008 and 2012. This poll demonstrates very well how Democrats would do if the Republicans successfully made the 2016 election all about national security. They now get to beat their chests and shout "No Sharia Law! "Radical Islam!" and "No Syrian refugees!"
Would they be better at national security due to their bluster? Not in the least.
Fox News makes sure their final poll is right. The rest of them are biased as anything just to fit their agenda. (Gosh, never thought I'd be arguing the pbrower wasn't unskewing polls.)