CNN will end John King's 6 p.m. show, John King, USA on June 29, though King will stay with the network as its lead national campaign correspondent.
Starting July 2, The Situation Room with Wolf Blitzer will expand an hour to run from 4-7 p.m., taking over King's timeslot.
"This is John's seventh presidential campaign, fourth with CNN, and making him available across our programming lineup allows us to better tap his skills and experience, especially on the ground reporting in major battleground states and among critical voting blocs," wrote CNN executive vice president Ken Jautz in an internal memo.
John King, USA launched in March 2010 in the 7 p.m. hour, shifting back to 6 p.m. last September to accommodate Erin Burnett's new show. The show generally failed to drive strong ratings, and a CNN spokeswoman said Wednesday that having King in the field "is where we think John will have the greatest impact."
CNN has been under pressure to make changes to its lineup in the face of declining ratings, which recently hit a 20-year low in primetime. Speaking at an industry conference last month, Phil Kent, CEO of CNN parent company Turner Broadcasting, said he was "very unhappy" with CNN's primetime ratings" and that "we haven't put the best shows on the air."
In his remarks, Kent offered support for CNN primetime hosts Anderson Cooper, Piers Morgan and Burnett, adding, "we have some other shows that probably need to be replaced."