I see this as a tactical weakness in the GOP.
The marxists have a goal in mind and are willing to accept an incremental movement toward their goal. Over the last century they have inched their way toward the goal line when in the opposition and made giant gains when in control.
The GOP, not so much.
Those who are willing to believe they have accomplished something by voting "third party" come to mind. This empowers Democrats and the left and further weakens the only chance we have at defeating liberalism and that is through the Republican party.