From Wall Street Journal:
When U.S. voters go to the polls next week, there’s a lot more at stake than just who controls Congress next year.
The outcome could also decide who holds power in the House of Representatives–and maybe even the White House–over the next decade.
The reason? Legislatures all across the nation will redraw the boundaries of congressional seats based on the 2010 Census, as required every 10 years by the U.S. Constitution. The party that wins more governor races and state legislatures will gain the upper hand in the remapping process.