An editorial I found.
Our view: Specter's defection is latest manifestation of troubling trend.
Pennsylvania Sen. Arlen Specter's decision to become a Democrat, rather than face likely defeat in a Republican primary dominated by conservatives, has produced two story lines. One is that the GOP is in a kind of death spiral as the defection of moderates pushes it further to the right, causing other moderates to leave or be pushed out. The second is that Specter is a calculating pol whose overarching interest is his re-election.
Both themes ring true. But they miss the larger — and troubling — historical trend of polarization in both parties.
The nation needs lawmakers willing to buck orthodoxy. It needs people who will make tough choices on Social Security, deficit reduction, immigration, health care and more. Since the choices are sure to be unpopular, they cannot be tackle
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