The House voted to hold former Internal Revenue Service official Lois Lerner in contempt on a 231-187 vote Wednesday, as Republicans work to uncover the depth of Lerner's involvement in the agency's targeting of conservative groups from 2010 to May 2013.

Six Democrats broke with their party to support the contempt vote: Ron Barber of Arizona, John Barrow of Georgia, Collin Peterson of Minnesota, Mike McIntyre of North Carolina, Nick Rahall of West Virginia, and Patrick Murphy of Florida. All are facing Republican challengers in tough districts for Democrats in November.