"Momentum is on the side of making Maryland families stronger," said Kevin Nix, a spokesman for the group.
The 52-44 split is by far the rosiest result for supporters to date. Recent polls by Gonzales and The Washington Post have put the issue much closer to 50-50.
Though supporters see the result as a shift in public opinion, it is very difficult to compare results from different firms, particularly when the polls show movement by only a few points. Each pollster uses his or her own set of assumptions for turnout when compiling the results, which can wildly change the results.
But, the PPP survey could be a helpful baseline for supporters to use as they ramp up a state-wide campaign on the issue over the summer.
Opponents to the state's new same-sex marriage law are working to collect the 56,000 signatures needed to put the law on the ballot.