Smith, 61, said her views are driven by her faith and remain unchanged even though her late twin brother was openly gay. "He has nothing to do with my views," she said. "This is about what the Bible says."
Religion plays a big role in voters' views on the matter, The Post poll found. Among opponents of same-sex marriage, two-thirds say their religious beliefs and opinions are the chief influence on their views.
Supporters cite more varied motivations, including personal and educational experiences, and family and friends. Just 9 percent say religion is the biggest influence on their views.
Age also plays a big factor in Marylanders' views of same-sex marriage. Sixty-four percent of those 18 to 39 support Question 6. That drops to 51 percent of those ages 40 to 64, and 40 percent of those 65 and older.
The telephone poll was conducted Oct. 11-15 among a random sample of 1,106 Maryland adults. Interviews were conducted on conventional land-line and cellular telephones, and in English and Spanish.
The sample of 934 registered voters and 843 likely voters each have a margin of sampling error of plus or minus four percentage points.
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Washington Post staff writers Rachel Karas, Jon Cohen and Scott Clement contributed to this report.