As the 15th anniversary of 9/11 approaches, partisan differences over the ability of terrorists to launch a major attack on the United States are now as wide as at any point dating back to 2002.
Big partisan shifts in the House of Representatives happen, but not often. In only three of the past 12 election cycles has one party posted a net gain of more than 30 seats, and on average 93% of House members who seek re-election are voted back into office.