1. First Two Party era: Federalists (manufacturing vision) vs. Democratic Republicans (agrarian vision)
2. Second Two Party Era: Democrats and Whigs- this era fell apart over sectional issues like tariffs, slavery, and expansion.
3. Third Two Party Era: Democrats vs. Republicans
4. We are currently under an era of Divided Government where one party controls the White House and another party controls Congress. Currently we have a Democrat for a President, the Dems control the Senate and the Republicans control the House. Makes it more likely for legislative gridlock to occur, difficult to pass needed legislation.