Weigel bluntly states that Lieberman "was going to lose if he ran":

What happened? How did a guy who won a three-way 2006 race with 50 percent of the vote come to this? It's simple: Lieberman turned everybody off and broke a series of promises. If you were a Democrat who supported him, you heard him promise to endorse the party's 2008 presidential candidate, then you watched him endorse John McCain. If you were a Republican who supported him, you heard him say he couldn't vote for the health care bill in December 2009, because of the Medicare buy-in. You might have even waved pro-Lieberman signs, as some people I met at a Tea Party rally in D.C. did at that time. Then you watched him cave once the buy-in came out.

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