Given what we've learned from the 1994, 2006 and 2010 midterms about how partisanship, divisiveness and polarizing presidents all affect both midterm elections and the powers of the presidency, we ask if Democrats can flip the House in 2018.

2010 was the year of the Tea Party, the year of backlash against Obama, and the year of the biggest shift of power in the House in a century. But it’s also the year that Republicans executed a little-noticed strategy that cemented their place in power.