If Rand is the nominee I will be supporting Rand. His VAT and plans for unlimited legal immigration including H1Bs will be a tough pill to swallow. Yet certainly a better and necessary choice rather than Hillary, at least for 4 years.
Unfortunately once Rand institutes his immigration policy there will only be Democrat victories going forward. The Republican party will move further to the left due to the demographic change and we can expect a future of this country to move closer to Communism with each passing year.