… From 1896 to 1930, the Republican Party reigned supreme; from 1932 to 1968, the New Deal Democrats dominated; following a period of deadlock, the Reagan Republicans held sway during the 1980s. After the parties exchanged the White House, Democrats appeared to take command of American politics in 2008. In that election, Obama and the Democrats won not only the White House but also large majorities in the Senate and House, plus a decided edge in governor’s mansions and state legislatures.
At the time, some commentators, including me, hailed the onset of an enduring Democratic majority. And the arguments in defense of this view did seem to be backed by persuasive evidence. Obama and the Democrats appeared to have captured the youngest generation of voters, whereas Republicans were relying disproportionately on an aging coalition. The electorate’s growing ethnic diversity also seemed likely to help the Democrats going forward.
These advantages remain partially in place for Democrats today, but they are being severely undermined by two trends that have emerged in the past few elections—one surprising, the other less so. CONT.
John B. Judis, National Journal