How Far, and in What Way, Do Email-Based Petitions Get Shared Through Social Connections?

Two experiments were conducted
with an election reform advocacy organisation to map the way email based petitions are shared through social connections when petition requests are send out to email groups. The study found that a small group of super spreaders were responsible for a disproportionately large share of petition signatures.
Are Local Framings of Issues on Mailers More Effective Than National Framings in Increasing Turnout?

A/B RCT experiment testing if issues with local framing work better than national framing.