15 point differential amongst two Right Wing pollsters? "May you live in interesting times"
Again, Fox News uses a bipartisan panel of pollsters, a Democrat pollster working with a Republican pollster. It is not a right wing pollster.
But it does seem that the democrat side of it is less influential than the republican side of it, as their outliers are always with too-big republican leads rather than with too-big democratic leads.
And 538 adjusts their polls based on almost a 4 point republican bias this year.