Why Senate seats are worth so much
Blue Wall Democratic Senate seats seem to be on the knife's edge. Here's why they are so key: Senate seats are held for six years, and there are only 100 of them, versus 435 House seats held for two years. So that makes each Senate seat worth roughly 13 House seats. And the Senate looks very different with, say, 55 Republican Senators than with 52 Republican Senators. With 52 Republican Senators, moderates like Susan Collins and Lisa Murkowski are key. But with 55 Republican Senators, more expansive GOP policy goals are well within reach.