DULUTH, Minn. — State Senator David Tomassino, a veteran lawmaker from Iron Range who championed efforts to find a cure for amyotrophic lateral sclerosis disease, died after a year-long battle with the incurable neurological disease. He was 69. Tomassino, a Democrat, was elected to the House in 1992 and the Senate in 2000 — a 30-year span in the Legislature. As one of his last major accomplishment, Tomassino authored a $25 million bill to fund research into ALS, as the disease is usually known, and to support caregivers. Governor Tim Walz signed the bill in March. Tomassino visited the Capitol for the ceremony, albeit in a wheelchair and communicating with a computerized speech synthesizer. “This bill means hope,” he managed to say.