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WaPo: The remarkable consistency of Democratic party ID — in 1 chart

by Lisa Mathias

The Fix blog’s Chris Cilizza uses our updated exit poll data to take a look at the breakdown of Party ID in past elections. Some points he noticed:

What’s remarkable is the consistency of the percentage of voters calling themselves Democrats over that time period. In those eight presidential elections, Democratic party ID has never dipped below 37 percent and never risen above 39 percent.
There has been more fluctuation in Republican party ID over that time. Republicans reached 37 percent of the electorate in the 2004 election but have dipped to 32 percent in each of the last two presidential contests — the party’s lowest ebb in 30 years.

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