When the Nassau legislature votes on new electoral districts on Tuesday, the day by which it must pass them, it will likely end a very lengthy and cynical battle. The controversy began when the Republicans who control the body and their county attorney, John Ciampoli, tried -- but failed -- to circumvent the county charter and draw lines two years early. It ended when Legis. Denise Ford of Long Beach, a Democrat who caucuses with Republicans, spoke out. But Ford didn't protest for the sake of voters; it was to keep a fellow legislator, Democrat David Denenberg of Merrick, from being drawn out of his district and into another Democratic incumbent's. The county needs electoral districts drawn by an independent commission. Without that, lines can get redrawn, but only to protect fellow politicians rather than the best interests of ordinary voters.