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Six lawmakers in the House and Senate had an ideologically even voting record in 2012.
Type in a Senator's name to see where their votes fall on the partisan spectrum.
National Journal examined all of the roll-call votes in the second session of the 112th Congress and identified the ones that show ideological distinctions between members.
The 116 Senate votes and 116 House votes on which National Journal’s 2012 vote ratings are based.
National Journal's annual list of the most conservative members in the House of Representatives, calculated from voting records.
Fourteen House members are tied for the most left-leaning legislator, according to National Journal 's 2012 vote ratings.