In 2015, Smart starred in the second season of the FX television series, "Fargo", portraying Floyd Gerhardt, whose husband is Fargo's most prominent organized crime syndicate, and who is forced to take over after her husband suffers a debilitating stroke. She later finds herself having to lead the Gerhardt dynasty and deal with her sons who are vying to replace their father. For her performance, Smart won the Critics' Choice Television Award for Best Supporting Actress in a Movie/Miniseries, and was nominated for the Primetime Emmy Award for Outstanding Supporting Actress in a Limited Series or Movie.