This shortage of money was reflected in campaign strategies.
Progressive insurgents pursued campaign strategies that were financial resource low and human energy resource high. As such, a majority focused on field operations, understanding organizing and mobilizing their district to be necessary for their victory. One challenger put it succinctly, “You need a good ground campaign to be competitive or to win.”
Instead of doing lots of mailers and TV ads and social-media ads.
What made some progressive insurgents win?
About 8% of them win, and 7.5% who primary Democrats succeed in that. Their median performance was 23.5%:
0% - 28 - 10% - 74 - 25% - 33 - 40% - 17 - 50%
They did much worse when challenging D incumbents than in the other sorts of seats.
Then the average change in how much of the vote, by candidate feature.
For primarying a Democratic incumbent, the most success was for having previously held elected office, at 18.5%. Women did about 6% better than men, every $10,000 raised bumped up by %0.11, and more than one insurgent bumped them down by 10.4%. Among endorsements, Justice Democrats: 15.8%, Our Revolution: 15%, Working Families Party: 14.2%, Democratic Socialists of America: 13.5%. Insignificant factors included median household income, voter turnout, and Brand New Congress endorsement.
For endorsements, one has to be careful about the direction of cause and effect, because the endorsers may select those that they think will win.
For an open Democratic seat, there were no clear correlations.
For a swing seat, a WFP endorsement gave 30.8%, and an increase of the Gini inequality coefficient by 0.1 gave 16.8%.
For a Republican seat, a WFP endorsement gave 13.8%, but a 0.1 increase in the Gini coefficient reduced by 36.4%.
For 2018, the only significant factor was running against a Republican, giving an increase of 13.8%.
FOr 2020, each previous run gave 14.8% and each 1% increase in how Democratic a district is reduced by 0.7%.