It's not unreasonable to see people say they might vote for Johnson. It's just too soon at this point to be saying it.
If Ron Paul does not get the nomination, there is only several choices left at the ballot box - write Ron Paul's name in, choose one of the third party candidates like Johnson or the Constitution party; and only several other choices beyond that - like try to kick both major party candidates off the ballot for both being ineligible to be president, start a campaign aimed at the electoral college, etc.
But the only actual trolls are coming from Romney. Any of those options are options he doesn't want.
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