The Republican party has seen the rise of the Tea Party, essentially strict Constitutionalists. They aren't in favor of eliminating government but severely cutting it back - which libertarians can agree with, but they are not into the free love, drugs, prostitution side.
On the right, there are anarchists, but the bigger share are those who hate the Democrats catering to big business, the corruption.
The only area of agreement is that both Sanders supporters and the Tea Party have the collusion between big business and big government, where government gives the businesses like Facebook and Boeing favors and those businesses pay them back directly as Clinton Foundation donations or indirectly as lobbyist jobs after terms in government. And in this regard, both sides want to end the crony capitalism.