Nearly half of all Americans think the Constitution provides same-sex couples the right to marry, according to a new CNN/Opinion Research Corporation Poll.

Forty-nine percent of respondents think gay and lesbian couples have the constitutional right to get married and have their marriage recognized by law, while 51 percent say those rights do not exist.

Full results [pdf]

The gap widens dramatically when age is taken into account. Nearly six in ten Americans under the age of 50 say gay rights are protected under the Constitution. Only 38 percent of Americans over the age of 50 say the same thing.