This combination of photos shows, from left, Tom Llamas, host of “Top Story with Tom Llamas,” Linsey Davis on the set of “ABC News Live Prime with Linsey Davis,” and John Dickerson, host of “CBS News Prime Time with John Dickerson.” (NBC/ABC/CBS via AP)
NEW YORK (AP) — For more than half a century, ABC, CBS and NBC have aired evening newscasts each weeknight on television. This fall, the…
