"H" is for Howell -- and hemp. (Originally posted 10/18/02 at 10 a.m.) The Globe followed up yesterday's front-pager on the Green Party's Jill Stein with one today on Libertarian Carla Howell. And whereas Stein comes across as a likable ultraliberal who could peel votes away from O'Brien, Howell -- despite reporter Sarah Schwietzer's humanizing touches -- seems unlikely to do much damage to Romney, despite her potentially popular anti-tax stand. After all, even those conservatives who are not fired up about Romney are not likely to desert him for someone who campaigns at hemp rallies.