<Tr> <Th> Lists </Th> </Tr> <Tr> <Td> <Table> <Tr> <Th> Elections by country </Th> </Tr> <Tr> <Td> <Ul> <Li> Close elections </Li> <Li> Most recent </Li> <Li> Next general elections </Li> </Ul> </Td> </Tr> <Tr> <Th> Electoral calendars for 2018 </Th> </Tr> <Tr> <Td> <Ul> <Li> National </Li> <Li> Local </Li> </Ul> </Td> </Tr> </Table> </Td> </Tr> <Table> <Tr> <Th> Elections by country </Th> </Tr> <Tr> <Td> <Ul> <Li> Close elections </Li> <Li> Most recent </Li> <Li> Next general elections </Li> </Ul> </Td> </Tr> <Tr> <Th> Electoral calendars for 2018 </Th> </Tr> <Tr> <Td> <Ul> <Li> National </Li> <Li> Local </Li> </Ul> </Td> </Tr> </Table> <Tr> <Th> Elections by country </Th> </Tr>

What is meant by the term midterm congressional elections