Two sets of expert decision makers are presented with the same query. Their responses to this query are represented by fuzzy sets which induce a generalized basic probability assignment (b.p.a.) over the class of fuzzy sets of the frame of discernment (⋀). The opinions of the two sets of experts are then polled in a conservative manner. The main result establishes a homomorphism from the class of experts with the operation defined by conservative polling into the class of generalized b.p.a.'s over the fuzzy subsets of ⋀ in which the combination operation is defined by Oblow's generalization of the Denlpster–Shafer rule. This result extends to other types of polling