<P> Trump vs. Warren </P> <Table> <Tr> <Th> Poll source </Th> <Th> Sample size </Th> <Th> Date (s) </Th> <Th> Margin of error </Th> <Td> Donald Trump </Td> <Td> Elizabeth Warren </Td> <Td> Undecided </Td> </Tr> <Tr> <Td> Zogby Analytics </Td> <Td> 805 </Td> <Td> August 17--23, 2017 </Td> <Td> ± 3.5% </Td> <Td> 40% </Td> <Td> 44% </Td> <Td> 16% </Td> </Tr> </Table> <Tr> <Th> Poll source </Th> <Th> Sample size </Th> <Th> Date (s) </Th> <Th> Margin of error </Th> <Td> Donald Trump </Td> <Td> Elizabeth Warren </Td> <Td> Undecided </Td> </Tr> <Tr> <Td> Zogby Analytics </Td> <Td> 805 </Td> <Td> August 17--23, 2017 </Td> <Td> ± 3.5% </Td> <Td> 40% </Td> <Td> 44% </Td> <Td> 16% </Td> </Tr>

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