Complex sentence: In January 2013, CNET named Dish Network's "Hopper with Sling" digital video recorder a nominee for its "Best of CES" award, and had won the award based on the initial vote of the CNET staff.
Split into simpler sentences: In January 2013, CNET named Dish Network's "Hopper with Sling" digital video recorder a nominee for its "Best of CES" award. The device then won the award based on the initial vote of the CNET staff.