History
The Impact of Gerrymandering on Electoral Competitiveness
Quick fact
In some states, gerrymandered districts are so safe that fewer than 10% of races are considered competitive, meaning most voters know the winner long before election day.
Why this is interesting
In the 2012 U.S. House elections, Democrats won more than a million more votes nationwide than Republicans—yet Republicans kept a comfortable majority of seats. How can a party lose the popular vote and still win big?