A court ruling last November forced Pennsylvania to redraw its congressional districts in advance of the 2018 elections. So members like Republican Rep. Brian Fitzpatrick are left scrambling to win over thousands of new voters (in Fitzpatrick’s case, nearly 50,000 of them) in order to keep their seats.
Fitzpatrick isn’t the only one dealing with an unpredictable, unfamiliar electorate. Of the 16 races rated Toss-ups by Inside Elections with Nathan L. Gonzales as of Thursday, nine were in states where voters register as members of a political party, providing a window on changes in the voter population and alliances in those contests. All nine seats are being defended by Republicans.