Open New Fronts
Almost every district is competitive when non-voters decide to vote.
When turnout jumped by 40% in 2018 (from about a third of voters to about half), Democrats won their largest seat increase in 40 years. Even so, only half of eligible voters cast a ballot in 2018. Though the number of votes cast by 18 to 29-year-olds jumped 10 percentage points, more than two-thirds of young people stayed home. In most districts "no vote" got more votes than the winning candidate. If non-voters voted, they could change the outcome of almost any race.

Who decides to vote can change the course of the reddest of red states or the bluest of blue states. When voter turnout changes, Republicans can win in Massachusetts and Democrats can win in Alabama. Formerly "non-competitive" states become competitive as different people decide to vote.