The Ayn Rand branch is important - but libertarians and the vanguard of the conservative movement that composes the modern Republican party are not the same people. So, careful with the broadbrush. Part of the problem with "modern conservatism" is lack of concurrence/coherent message (much like "modern liberalism" of the mid-70s to mid-90s).OK, but the modern Republican party had better do a better job repudiating the Alan Greenspans/Christopher Coxs/Phil Gramms/WSJ types within and without the party. Randian economics has been tried -- and the grand experiment cost us trillions of dollars.
Ayn Rand might turn out to be more like Karl Marx, in the sense of "Marxism was never really tried."...these words still resonate.