Propelled by successful campaigns in Western states to legalize the recreational use of marijuana, some advocates and legislators say a marijuana legalization race is developing in New England, with millions of dollars in tax revenue riding on the outcome. Lawmakers in five of the six New England states will consider legalization bills this year and two – Maine and Massachusetts – may put the question to voters in 2016. In New Hampshire, lawmakers are considering bills to decriminalize the drug and establish a study commission to look at legalization.