<Tr> <Td> Subseries (show) <Ul> <Li> Electoral systems </Li> </Ul> <Ul> <Li> Elections (voting) </Li> </Ul> <Ul> <Li> Federalism </Li> <Li> Form of government </Li> </Ul> <Ul> <Li> Ideology </Li> <Li> Political campaigning </Li> </Ul> <Ul> <Li> Political parties </Li> </Ul> </Td> </Tr> <Ul> <Li> Electoral systems </Li> </Ul> <Ul> <Li> Elections (voting) </Li> </Ul> <Li> Elections (voting) </Li>

When did the american 2-party system began to emerge