I don’t have enough data to say which way it has moved. so, I’ll just trust your data source. I can only talk for myself. I’ve been a Libertarian for a couple election cycles. I’m socially liberal and fiscally conservative. So, for presidential, I’ve been voting Libertarian. For other races that doesn’t have Libertarian on the ballot, i tend to lean Republican. However, because of Trump, I specifically ask all the Republicans about their thought on Trump. If they support him, I would disqualify them. So, I voted for Scott Peters this year.
I really hope the Libertarian party can get more exposure. I think there would be a lot people who align with the Libertarian philosophy if they only know about it. Hopefully, this year, with Hillary vs Trump, it might be the year. Since both of them are hated by a lot of people.