Georgia — .09 percentFlorida — 1 percentArizona — 3.1 percentIowa — 1.2 percentNorth Carolina — 2 percentTexas — (-4.4 percent)“David Wasserman, House editor for The Cook Political Report.Four of the six states Trump won by fewer than five points in 2016 allow voters to register by party: Arizona, Florida, North Carolina, and Pennsylvania. In recent months, there have been substantially more Republicans added to the rolls than Democrats in each of them except for Arizona.Wasserman’s data:Florida, since the state’s March primary, added 195,652 Republicans and 98,362 Democrats.Pennsylvania,...…Georgia — .09 percentFlorida — 1 percentArizona — 3.1 percentIowa — 1.2 percentNorth Carolina — 2 percentTexas — (-4.4 percent)“David Wasserman, House editor for The Cook Political Report.Four of the six states Trump won by fewer than five points in 2016 allow voters to register by party: Arizona, Florida, North Carolina, and Pennsylvania. In recent months, there have been substantially more Republicans added to the rolls than Democrats in each of them except for Arizona.Wasserman’s data:Florida, since the state’s March primary, added 195,652 Republicans and 98,362 Democrats.Pennsylvania,...WW…