Showtime has renewed Nurse Jackie for a fourth season, but is bringing United States of Tara to an end after three seasons.
Nurse Jackie has averaged 762,000 viewers a week this season in its Monday night timeslot (with 2.8M total weekly viewers). United States of Tara has been considerably weaker with just 326,000 viewers a week in its Monday night timeslot (with a weekly total viewership of 1.9M).
Source: Deadline