<Tr> <Th> Seats contested </Th> <Td> 39 (36 states, 3 territories) </Td> </Tr> <Tr> <Td_colspan="2"> Map of the 2018 gubernatorial races Democratic incumbent eligible for re-election Term - limited or retiring Democrat Republican incumbent eligible for re-election Term - limited or retiring Republican Independent incumbent eligible for re-election No election </Td> </Tr> <P> The 2018 United States elections will mostly be held on Tuesday, November 6, 2018 . These midterm elections will take place in the middle of Republican President Donald Trump's term . All 435 seats in the United States House of Representatives and 33 of the 100 seats in the United States Senate will be contested . 39 state and territorial governorships and numerous other state and local elections will also be contested . </P> <P> All 33 seats in Senate Class I will be up for election . Additionally, special elections may be held to fill vacancies in the other two Senate Classes . </P>

How many congress members are up for reelection in 2018
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