Shes the reason GOP turnout 2008 > 2012.
GOP turnout will end up higher than 2008 once all the votes are counted.
For What it's worth and subject to change pending final tallies.
Popular EV Romney/Ryan 59,637,581 47.7% 206 EV McCain/Palin 59,934,814 45.7% 173 EV Net McCain/Palin 29,233 -2.0% -33 EV
That said whomever becomes the nominee in 2016 needs to be someone that can bring enough voters together to defeat the democratic candidate. We surely don't need a 16 year run of democratic control plus however many years into the future the Supreme Court impact of their nominees will be.
I can tell you that in Oklahoma, Sara Palin engendered actual excitement in 2008. The only people I know excited about voting for Romney (and not merely against Obama) are members of the Church of Jesus Christ of Latter-day Saints.