By Frank Newport, Gallup

PRINCETON, NJ - A record-high 50% of Americans now say the use of marijuana should be made legal, up from 46% last year. Forty-six percent say marijuana use should remain illegal.

When Gallup first asked about legalizing marijuana, in 1969, 12% of Americans favored it, while 84% were opposed. Support remained in the mid-20s in Gallup measures from the late 1970s to the mid-1990s, but has crept up since, passing 30% in 2000 and 40% in 2009 before reaching the 50% level in this year's Oct. 6-9 annual Crime survey.

According to the National Institute on Drug Abuse, "Marijuana is the most commonly abused illicit drug in the United States." The National Survey on Drug Use and Health in 2009 found that "16.7 million Americans aged 12 or older used marijuana at least once in the month prior to being surveyed, an increase over the rates reported in all years between 2002 and 2008."

The advocacy group National Organization for the Reform of Marijuana Laws claims that marijuana is the third-most-popular recreational drug in America, behind only alcohol and tobacco. Some states have decriminalized marijuana's use, some have made it legal for medicinal use, and some officials, including former U.S. Surgeon General Joycelyn Elders, have called for legalizing its use.

A Gallup survey last year found that 70% favored making it legal for doctors to prescribe marijuana in order to reduce pain and suffering. Americans have consistently been more likely to favor the use of marijuana for medicinal purposes than to favor its legalization generally.

Younger Americans Most in Favor of Legalizing Marijuana

Support for legalizing marijuana is directly and inversely proportional to age, ranging from 62% approval among those 18 to 29 down to 31% among those 65 and older. Liberals are twice as likely as conservatives to favor legalizing marijuana. And Democrats and independents are more likely to be in favor than are Republicans.

More men than women support legalizing the drug. Those in the West and Midwest are more likely to favor it than those in the South.

Bottom Line

Support for legalizing marijuana has been increasing over the past several years, rising to 50% today - the highest on record. If this current trend on legalizing marijuana continues, pressure may build to bring the nation's laws into compliance with the people's wishes.