Here is the number that ought to frame every story written about Tuesday night, and won’t. Claire Valdez is now the Democratic nominee for New York’s 7th Congressional District, which means — in a district this blue, where the November election is a coronation — she is effectively the next member of Congress for some 770,000 people. She earned that with roughly 37,000 votes. Across the whole city, turnout limped in around 420,000, against more than a million in last year’s mayoral primary.