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When did Democrats and Republicans switch platforms?

When did Democrats and Republicans switch platforms, changing their political stances — and why? The Republicans used to favor big government, while Democrats were committed to curbing federal power.

Side-by-side black and white portraits of presidents Abraham Lincoln and Franklin D. Roosevelt
Abraham Lincoln, the 16th U.S. President and a Republican (left), and Franklin Roosevelt, the 32nd U.S. President and a Democrat. The Republican and Democratic parties effectively switched platforms between their presidencies.
(Image credit: Public Domain)

The Republican and Democratic political parties of the United States didn't always stand for what they do today. The more liberal Democrats and the right-wing Republicans each have a defined set of belief systems, but these were once very different. So when did Democrats and Republicans switch platforms? And why?

First Republican and Democratic platforms

Natalie Wolchover

Natalie Wolchover was a staff writer for Live Science from 2010 to 2012 and is currently a senior physics writer and editor for Quanta Magazine. She holds a bachelor's degree in physics from Tufts University and has studied physics at the University of California, Berkeley. Along with the staff of Quanta, Wolchover won the 2022 Pulitzer Prize for explanatory writing for her work on the building of the James Webb Space Telescope. Her work has also appeared in the The Best American Science and Nature Writing and The Best Writing on Mathematics, Nature, The New Yorker and Popular Science. She was the 2016 winner of the  Evert Clark/Seth Payne Award, an annual prize for young science journalists, as well as the winner of the 2017 Science Communication Award for the American Institute of Physics. 

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