There are four kinds of political parties, democratic parties, non-democratic parties, ideological parties & nonideological democratic parties. Democratic parties are open to anyone, and are not...
The Whig party grew up largely as an opposition party to Andrew Jackson's Democratic Party. It was strongest in the old Federalist strongholds of the Northeast and the old-line Southern states. Some...
People have different opinions, and one party couldn't possibly represent everyones points of view, so separate parties are formed to represent separate opinions.