I think the room for growth is there as a centrist alternative to the major parties. The Republicans have abandoned free trade and open immigration policy for white working class identity politics. The democrats are also starting to move much further left on fiscal and economic issues.
An experienced governor like Bill Weld could be a good nominee. America''s tired of the war and drugs and the war on terror, so issues like that could attract more votes for a libertarian candidate. I'm a libertarian, and I'd end the war in Afghanistan on day one if I was elected to office. The US could cut its military budget in half and still have an edge over Russia and China. We can worry about Yemen, Syria and Afghanistan once we've ended mass incarnation, held cops accountable for police brutality, and Flint, Michigan has clean water.
If the election was held tomorrow, how many votes could Weld get? 5-6 percent?