The second reason that I don’t trust the neighbor method is that people just… aren’t good at knowing who a majority of their neighbors are voting for.
This seems like a point in favor of the neighbor method, not against it. You would want people to find “who are my neighbors voting for?” too difficult to readily answer and so mentally replace it with the simpler question “who am I voting for?” thus giving them a plausibly deniable way to admit to voting for Trump.
If you ask people who their neighbors are voting for, they will make their best guess about who their neighbors are voting for. Occasionally their best guess will be to assume that their neighbors will vote the same way that they’re voting, but usually not. Trump voters in blue areas will mostly answer “Harris” to this question, and Harris voters in red areas will mostly answer “Trump”.
This seems like a point in favor of the neighbor method, not against it. You would want people to find “who are my neighbors voting for?” too difficult to readily answer and so mentally replace it with the simpler question “who am I voting for?” thus giving them a plausibly deniable way to admit to voting for Trump.
If you ask people who their neighbors are voting for, they will make their best guess about who their neighbors are voting for. Occasionally their best guess will be to assume that their neighbors will vote the same way that they’re voting, but usually not. Trump voters in blue areas will mostly answer “Harris” to this question, and Harris voters in red areas will mostly answer “Trump”.