MORIOKA, Iwate Pref. — Iwate Gov. Takuya Tasso, backed by the Democratic Party of Japan, won re-election to a second term by a large margin Sunday.Winner: Takuya Tasso celebrates after being re-elected governor of Iwate Prefecture on Sunday. KYODO PHOTO"To the best of my ability, I will do everything to support those affected by the disasters and proceed with reconstruction work," Tasso, 47, said in a victory speech at his campaign office in Morioka.He defeated three opponents after leading reconstruction work in the prefecture after the March 11 disasters."I will take the initiative to realize a safer and richer Iwate," he said.One of his challengers was supported by the Liberal Democratic Party.Iwate is the first of the three prefectures hit hardest by the March disasters to hold a gubernatorial election. Elections originally scheduled for April have been put off in Iwate, Fukushima and Miyagi under a special law.Voter turnout Sunday stood at 59.92 percent, 8.61 percentage points below the record low in the prefecture's last gubernatorial election in 2007.Tasso garnered 438,975 votes, followed by Hiroyuki Takahashi, a 37-year-old former Iwate prefectural assembly member backed by the LDP, who got 163,397.In the campaign, Tasso, a former DPJ lawmaker in the Lower House, emphasized his achievements in his first four-year term and effectively utilized organizational strength as the incumbent.