I compared the margin of support/opposition for gay marriage in each state (according to this poll) to Obama's 2012 margin of victory in each state, as a rough proxy for whether a hypothetical candidate would gain or lose votes by supporting or opposing SSM. To put it a different way, the greener the state, the more (relatively) gay-friendly its Republican voters, the redder, the more (relatively) homophobic its Democratic voters. Some interesting results.
NH +33
MA +29
ND +29
AK +28
UT +26
KS +25
WY +24
RI +21
OK +19
CT +18
MT +18
SD +18
WV +18
NV +17
AZ +16
NE +15
NM +15
VT +15
CO +14
IA +14
ID +14
KY +11
ME +11
LA +10
MN +10
WA +10
OR +9
IN +8
WI +7
NY +6
PA +6
FL +5
CA +4
DE +4
NJ +4
IL +3
MO +3
TX +3
VA +3
AR +2
OH +2
SC - EVEN
MI -1
GA -2
NC -2
TN -9
AL -10
HI -10
MD -14
MS -16
US +5
90% green: +30 to +34
80% green: +25 to +29
70% green: +20 to +24
60% green: +15 to +19
50% green: +10 to +14
40% green: +5 to +9
30% green: +0 to +4
30% red: -0 to -4
40% red: -5 to -9
50% red: -10 to -14
60% red: -15 to -19
