

For the average voter it’s not much different than a regular political party: vote for this candidate if we endorse them. The actual math and projections of when to trigger this can be coordinated and agreed on by people you/your local representative trust.
The theory is simple but it probably would be trial and error in practice. For example, if our actual turnout votes for an endorsed candidate differ from our pledged voters by X% then we need to increase our number of pact members proportionally before triggering.
Fully agree, but posted this more as theory on a potential way out of a two party hegemony. It also requires a lot of time and trust building to have any effect, so probably not applicable to US’s current crisis. But there are a lot of countries that still use FPTP in some fashion, it might be applicable there.