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Regardless of what he's saying now, that's not exactly the track record of someone who's been consistently libertarian or free-thinking.
Sure, Barr is not a truly changed man overall, and remains the same person who supported/authored everything listed, but, in this case, the enemy of my enemy is my friend. Truly this is the case.
Barr isn't going to win. No way. He does serve a good purpose here however. He can inject civil liberties into the debates and the greater dialog. He drains votes (primarily) from McSame. He could help crack the stranglehold the two parties hold on the election system in this country.
If he can win enough votes, he will force notice from the MSM. He WILL force the start of a change in how the voters view 3rd (4th, 5th, 6th) parties.
I don't want Barr as President but I want him in this race, in the debates, and I want him to obtain a significant percentage of the vote. THAT would put the fear of Pan into the GOP AND the Democraps.
Useful.