Wonder how accurate this is:

The Vermont Democratic Party
leadership has allowed no authorized candidate to run against Bernie in
1990 (or since) and in return, Bernie has repeatedly
blocked third party building. His closet party, the Democrats, are very
worried about a left 3rd party forming in Vermont. In the last two
elections, Sanders has prevented Progressives in his machine from running
against Howard Dean, our conservative Democratic
Governor who was ahead of Gingrich in the attack on welfare.

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