GOP voters only: would you support a candidate whose only platform is to replace all taxes with?

I am Tea Party that tags along with the GOP. I would have to evaluate everything. VAT is an idea, a national sales tax and ending the IRS is another idea. However, if that candidate would be for gay marriage, and once that is in place then family marriage, and once that is there, then legalized polygamy,,,, then anything else that could be connected to "consenting adults"..... then NO