Home BlogData Visualization Visualizing Changes in the Ideological Makeup of Congress

Visualizing Changes in the Ideological Makeup of Congress

by Joshua New
Congress ideology

The Wall Street Journal has created a series of data visualizations illustrating the shifts in the ideological makeup of Congress under different presidents. The visualizations show the balance of party representation in the Senate and House, the voting records of lawmakers growing more or less liberal or conservative, and the frequency with which members of Congress vote along party lines, dating back to the Eisenhower administration. Since around the time of the Reagan administration in the 1980s, the visualizations show that Republicans have skewed more conservative, while Democrats have stayed moderately liberal, and that when their party is in power, both Democrats and Republicans have grown substantially more likely to vote along party lines.

Take a look.

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