Playbook: “With fewer than three weeks to go, the national environment keeps deteriorating for Republicans, and some Democrats are starting to dream of a big blue wave — even as warning signs remain that some GOP backlash may not translate to Democratic conversion.”“The deluge of campaign spending is now hitting its peak, as candidates scramble to deliver a closing message to late-deciding voters only just tuning in.”It’s no surprise everyone is getting their Blue Wave T-Shirts before Election Day.