Complex sentence: In an campaign advertisement during his 2012 Senatorial run, Mandel claimed opponent Sherrod Brown "cast the deciding vote on the government takeover of health care", a description labeled by independent fact-checking groups as "nonsensical" and a "myth".
Split into simpler sentences: In an campaign advertisement during his 2012 Senatorial run, Mandel claimed opponent Sherrod Brown "cast the deciding vote on the government takeover of health care". The description of the act as a government takeover of health care has been labeled by independent fact-checking groups as "nonsensical" and a "myth".