description: "New primary with equal electionId" uri: "mongodb://a/?replicaSet=rs" phases: [ # A and B claim to be primaries, with equal electionIds. { responses: [ ["a:27017", { ok: 1, ismaster: true, hosts: ["a:27017", "b:27017"], setName: "rs", setVersion: 1, electionId: {"$oid": "000000000000000000000001"}, minWireVersion: 0, maxWireVersion: 6 }], ["b:27017", { ok: 1, ismaster: true, hosts: ["a:27017", "b:27017"], setName: "rs", setVersion: 1, electionId: {"$oid": "000000000000000000000001"}, minWireVersion: 0, maxWireVersion: 6 }] ], # No choice but to believe the latter response. outcome: { servers: { "a:27017": { type: "Unknown", setName: , setVersion: , electionId: }, "b:27017": { type: "RSPrimary", setName: "rs", setVersion: 1, electionId: {"$oid": "000000000000000000000001"} } }, topologyType: "ReplicaSetWithPrimary", logicalSessionTimeoutMinutes: null, setName: "rs", } } ]