CBS panned for Republican debate performance  —  The first broadcast network presidential debate this year, which ended its national telecast and switched to a choppy livestream feed two-thirds of the way through the event, produced a storm of complaints from viewers across the country …

Debates take toll on GOP field  —  Televised debates have had an outsize impact on this year's Republican presidential race.  But the demands of the debating schedule — Saturday's event in South Carolina was the eleventh major clash — is taking its toll on the candidates, who find themselves constantly preparing for primetime.