… Asking people who they are going to vote for is one thing; understanding why is another. Polls and surveys give valuable hints, but they often fail to explain results on Election Day, let alone predict them. Now a group of researchers think that economic theory might point the way toward a better approach. …
The researchers, a mix of academics and private-sector experts from a range of disciplines, theorized that if they imposed artificial scarcity on survey respondents, they could force them to make tradeoffs that would reflect their real-world priorities better than traditional polling. CONT.
Ben Casselman, FiveThirtyEight