Third party votes are not wasted if you have a modern election system such as automatic runoff as used in some parts of California, e.g. San Francisco, and has been used in Australia for near 100 years. Then you can show your support for the third party but still vote for a party that is currently electable. It also encourages major parties to bargain with third parties as their support grows. It much more democratic as minority parties have significant influence even without having candidates elected.
Third party votes are not wasted if you have a modern election system such as automatic runoff as used in some parts of California, e.g. San Francisco, and has been used in Australia for near 100 years. Then you can show your support for the third party but still vote for a party that is currently electable. It also encourages major parties to bargain with third parties as their support grows. It much more democratic as minority parties have significant influence even without having candidates elected.