Original sentence: He currently hosts Countdown with Keith Olbermann on MSNBC, an hour-long nightly newscast that reviews the top news stories of the day along with political commentary by Olbermann.Keith Olbermann (born January 27, 1959) is an American news anchor, commentator and radio sportscaster
Edited sentence: He currently hosts Countdown with Keith Olbermann on MSNBC, an hour-long nightly newscast that reviews the top news stories of the day along with personal political commentary by Olbermann.Keith Olbermann (born January 27, 1959) is a controversial, left-wing  American news anchor, commentator and is also a radio sportscaster