Advocates of recreational marijuana use are looking to an upcoming vote in Maine as an indicator of whether the East Coast is ready to follow in the footsteps of Colorado and Washington by legalizing cannabis. Voters in Portland are being asked whether they want to make it legal for adults 21 and over to possess -- but not purchase or sell -- up to 2.5 ounces of pot. The Nov. 5 vote is being eyed nationally as momentum grows in favor of legalizing marijuana use.