Well, the article says that:
65 percent of democrats supported gay marriage
51 percent of independents supported gay marriage
24 percent of republicans supported gay marriage
Then goes on to say "The poll showed 63 percent of Americans believe gay relations writ large should be legal..." I assume that means that the poll says there is 63 percent overall support for gay marriage.
To get 63 percent overall support from the earlier numbers reported, the sample would have to look something like 93% democrats, 3.5% independents, and 3.5% republicans (other combinations are possile with slightly different combinations of independents and republicans but they would all have this kind of skew).
If you use the earlier numbers with any reasonable distribution of party identification (say, 38% D, 27% I, 35% R), you would end up with 47% percent support for gay marriage - still a minority even after years of relentless media propaganda
I expect the reporter made some mistakes, but I also suspect that any poll from Pew has bias that stinks to high heaven. They don't call it "Pew" for nothing.
Awesome. Thanks, Cap! That solidifies my belief.