Maddow Craters to Lowest Weekly Ratings of the Year After Mueller Conclusion

Rachel Maddow discusses the headlines of the day in Emens Auditorium at Ball State University, David Letterman's alma mater, Muncie, Ind., on Dec. 2, 2011. Ron Hoskins/Getty Images

MSNBC primetime host Rachel Maddow brought in her worst weekly ratings of the year last week, following the conclusion of special counsel Robert Mueller’s investigation.