The final votes are being counted from the 2018 election. They confirm that the Democrats crushed Republicans. Let's start in the seat count. Republican Rep. David Valadao of California's 21st District conceded on Thursday to Democrat T.J. Cox. Cox's victory combined with other election results means that Democrats have picked up a net gain of 40 seats. As has oft been repeated, this is the largest Democratic House gain since 1974. It's a larger gain than Democrats had in the wave elections of both 1982 and 2006. We can go back even further and see how unusual it is that...