The long-awaited 2012 election is less than a week away. This Friday night, join Elizabeth Warren, Niki Tsongas and Patrick Murphy for a pre-election rally at Arthur Ramalho’s West End Gym at 900 Lawrence Street in Lowell. Made famous around the world by the film The Fighter (it was already famous locally), getting a chance to see the inside of the West End Gym is itself worth the price of admission (which is free anyway); getting to hear from Democratic U.S. Senate candidate Elizabeth Warren is a bonus. Everyone is invited. Doors open at 5:30 p.m.