She also writes:
While Democrats may display dominance in presidential voting in some key states, the data does not suggest that all of the so-called “blue firewall states”have turned permanently blue or are solidly progressive. Both Michigan and Pennsylvania have voted Democratic in every presidential election since 1992. Yet at the state level, the governorship and both chambers of the legislature are under Republican control. Wisconsin has voted Democratic in every presidential election since 1988, but there, as well, the state government is currently under unified Republican control—despite President Obama winning the state twice.But state elections operate on a different track from federal elections. In the 1970s and 1980s, Southern states elected Democratic legislatures while voting for Republican presidential candidates. In 2012, popular former GOP governors lost Senate races in Wisconsin and Hawaii when they had to discuss national issues instead of state issues.