Ellis (2016) introduced a variant of the classic (jury) voting game in which voters have ambiguous prior beliefs. He focussed on voting under majority rule and the implications of ambiguity for Condorcet's Theorem. Ryan (2021) studied Ellis's game when voting takes place under the unanimity...

Subjective expected utility (SEU) theory is ubiquitous in models of economic environments involving uncertainty. Part of its appeal is its elegant axiomatization by Anscombe and Aumann, whose representation theorem uses little more than the simple geometry of expected utility. Nevertheless, the...