<Tr> <Th> Seats contested </Th> <Td> 39 (36 states, 3 territories) </Td> </Tr> <Tr> <Td_colspan="2"> 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> 2018 elections in the United States will be held on Tuesday, November 6, 2018, except for certain special elections . All these races, regardless if it is for a federal, state, or local office, are being administered by the individual state and local governments instead of at the national or federal level . These midterm elections will take place in the middle of Republican President Donald Trump's first term . All 435 seats in the United States House of Representatives and 35 of the 100 seats in the United States Senate will be contested . In addition, 39 state and territorial governorships as well as numerous other state and local elections will also be contested . </P> <P> Nearly half of all ads by Democrats focused on health care, in particular on defending the Affordable Care Act (Obamacare) and keeping in place protections for individuals with preexisting conditions . Almost a third of Republicans ads focused on taxes, in particular the Tax Cuts and Jobs Act of 2017 . According to a report by CNN, "So far in House, Senate and governor races this year, more than $124 million has been spent on more than 280,000 immigration - related TV ad spots...that's more than five times the amount spent during the 2014 midterms, when about $23 million was spent on less than 44,000 spots ." </P>

When do we vote for mid term elections