For instance, a poll taken last month for the National Annenberg Election Survey at the University of Pennsylvania showed that just over half of people ages 18 to 29 would oppose a law in their states that would allow lesbians and gay men to marry a same-sex partner. That compares with 61 percent of 30- to 44-year-olds; two-thirds of 45- to 64-year-olds; and 81 percent of those 65 and older.

The poll also found that fewer than half of those younger than 30 supported a federal constitutional amendment banning same-sex marriage.

Experts say the difference in attitudes can largely be tracked to young people's exposure to homosexuality in everyday life.
