What better way to rally voters in support of saving the Astrodome than a weekend-before-election-day sell-off of parts ripped from its vast interior? Will the resulting media attention to Dome history and the possible scrap value of its salvaged furnishings encourage voters to support the bond issue on the ballot that’ll preserve but reinvent Houston’s landmark venue? Or will focusing on the Dome’s already-in-progress dismantling and the junkyard-lot atmosphere (Get a piece of it while you can!) of this weekend’s all-day bleacher and AstroTurf yard sale have an opposite effect, allowing fencesitters an opportunity for clarity and closure — or even helping preservationists come to terms with the building’s possible demise?