P: 367 - 53%
G: 171 - 43%
O: 0 - 4%
This is tricky - I think there are states that we'd both win purely by virtue of the letters next our names. I think the battle grounds will be the South, primarily, NC, GA, SC and FL, the South West, CO and NV in particular as well as NH.
Goldwater's social liberalism triggers a small but damaging conservative third-party candidate. This swings borderline Southern states to me, and lowers the margins across the South, but CO and NV flip back into the R column. The closest states would be GA, CO and NH. His base in the NW gives him a boost in WA, OR and CA - but not enough to flip them.