Today is the one-year anniversary of when Sen. Arlen Specter (D-PA) switched to the Democratic Party, after 28 previous years as a Republican Senator. And this has become one of the most interesting races of the cycle — starting with a Republican Senator in danger of losing his primary, then him becoming a Democrat in order to avoid that fate, and now lingering in a state of political peril similar to the rest of his newfound party in this cycle.
This is a companion discussion topic for the original entry at https://talkingpointsmemo.com/?p=127230