A new A.P. poll finds that the number of Americans who oppose marijuana legalization has fallen dramatically in the last few years. In a survey completed last week, 29 percent of respondents said they opposed “legalizing the possession of small amounts of marijuana for personal use,” compared to 55 percent in 2010. A.P. notes that the 2010 survey was conducted by phone, while the new one was conducted online, a method that tends to boost neutral responses. The share of respondents who said they “neither favor nor oppose” legalizing marijuana tripled between 2010 and 2013, while the percentage favoring legalization rose only slightly. Still, the A.P. numbers are consistent with other surveys in finding increased receptiveness to repealing marijuana prohibition.