TheStreet: 21st Century fox is poised to spike up to 25 percent on increasingly large fees from network affiliates across the country, Bernstein media analyst Todd Juenger said in an investor note. Juenger has “confidence” in the higher valuation, with political coverage and Super Bowl coverage expected to help boost affiliate fees and retransmission fees that would more than offset declines in advertising. Bernstein’s advertising forecast calls for a low- to mid-single-digit declines for broadcast and low-to mid-single-digit increases for cable.