Way back in May—remember May? when it was sunny? remember sun?—I mentioned that this was coming.

Now it's almost here.

An additional seat would increase the state's clout in D.C. and could potentially shift the outcome of big national debates. This year alone, the House held close votes on everything from health-care reform (approved by only a nine-vote margin in March) to financial-industry regulation (which passed the House by 19 votes last December). Given that, it's easy to see why having a 10th representative from Washington State could be a big deal.

Where would a 10th congressional district go in Washington State? Read on.