A growing majority of Americans support the legalization of recreational marijuana, though divides continue to exist along party lines, according to the most recent NBC News/Wall Street Journal poll.

In a survey conducted at the beginning of a year in which several states are expected to vote on marijuana legalization, 60 percent of respondents supported allowing adults to buy marijuana for personal use.

When NBC News and The Wall Street Journal asked the same question in 2014, that number was 55 percent.

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Renee Hickman ~ NBCNews.com ~