he atmospherics offered plenty of clues, but the numbers don’t lie: The House was an even more polarized and partisan place last year than it was when the tea party class of Republicans took over the place two years before. And that’s in part because those lawmakers have grown even more antagonistic to President Barack Obama’s agenda — and even more willing to toe the party line. That is among the central takeaways from CQ Roll Call’s analysis of 2013 congressional voting patterns, the latest installment in an annual study that began six decades ago. While Obama got his way...