Larry Schweikart at Big League Politics reported:

October’s voter registration changes measured against last November continue to show Republican strength, almost across the board. Certainly in the “battleground” states, the Democrats are looking at a very bleak picture. A reminder that these are net changes—some states have seen voter registration increases, some decreases as rolls are purged—but the key is the net gain or loss of one party against the other. Also, keep in mind Virginia, Minnesota, Wisconsin, Michigan, Texas and Georgia, to name a few, do not register by party so it is impossible to track the changes in those states. However, with that in mind . . . .

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*AZ Rs net +11,160

Both parties gained, and the Republican edge was down slightly from last look, but still holding very strong. So much for Arizona “going purple.” If this rate of changes holds, Arizona Republicans could have a net gain of an additional 25,000 voters by election time in 2018.

*FL Rs net +61,857 Since the election, Republicans have seen a net shift of nearly 62,000 in their direction. This represents a further net gain of about 6,000 since my last report, meaning that Republicans are gaining ground at the rate of about 6,000 per month. If this were to hold through 2020, Florida would be a Republican state.

*IA Rs net +70,801 Democrats can pretty well forget about Iowa, a state Obama carried and George W. Bush lost. This massive level of change bodes extremely well for neighboring Wisconsin and Minnesota, where we cannot track these changes, but which have some of the same demographics.

*NC Rs net +61,752 This is up another 1,000 since last month, and shows the Tar Heel State continues to turn back to the Republican Party as the Democrats are losing significant registrations. When combined with the 2016 3% black voting shortfall, North Carolina presents another bleak picture for the Democrats in the near future…

…And the biggie:

*PA Rs net +109,101 Pennsylvania’s shocking march away from the Democrats is breathtaking: Democrats were down another 22,000 since last month and Republicans are surging. Once again, Pennsylvania’s numbers likely speak to Michigan.