<Tr> <Th> Poll source </Th> <Th> Date (s) administered </Th> <Th> Sample size </Th> <Th> Margin of error </Th> <Th> Susan Bysiewicz (D) </Th> <Th> Mark Boughton (R) </Th> <Th> Undecided </Th> </Tr> <Tr> <Td> Tremont Public Advisors </Td> <Td> May 3--5, 2018 </Td> <Td> 550 </Td> <Td> ± 4.5% </Td> <Td> 42% </Td> <Td> 47% </Td> <Td> 11% </Td> </Tr> <Dl> <Dt> with generic Democrat and Republican </Dt> </Dl> <Dt> with generic Democrat and Republican </Dt>

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