It's not just TEPCO, which provides electricity in Tokyo, but also other nuclear power plant operators, as Sankei Shinbun hints.
Again, so much for the Tokyo governor race being just a provincial, local race where jobs and social welfare should be the top issues.
The election to choose the head of a prefecture with over 10,000,000 electoral votes may be on par with a national election to choose the head of the state in mid- to small-size European countries.
It is really funny and sad at the same time (or schadenfreude) that all of Japan's mainstream media, including Sankei, started covering the nuclear issues as presented during the Tokyo gubernatorial election campaign, as soon as the election was over at 8PM on February 9, and continues to do so now.
During the election, they made sure they didn't cover the issue, and were very busy downgrading the issue, ridiculing the one candidate who put an enormous emphasis on the issue, and ridiculing his extremely vocal supporter. They didn't even show their faces in the video clips.
During the election, they completely buried the coverage of Hosokawa/Koizumi in their reporting. Now, almost all of them now say it was Hosokawa, with the strong support from Koizumi, that the Abe administration feared.
From the unabashedly pro-nuclear and pro-Abe Sankei Shinbun (2/10/2014; part) on the reaction to the election result from electric power companies:
"Our impression is that he is someone whom we can hold a constructive talk," executives at TEPCO commented on Mr. Masuzoe. The electric utility industry breathes a collective sigh of relief on Mr. Masuzoe's victory. It is because there was a chance that the restart of nuclear power plants that all [nuclear power plant] operators have been waiting for might have been further delayed if former Prime Minister Hosokawa, who was calling for "Zero Nuke Plant", had won.
Still, the supporters of the "socialist attorney" who came in the victorious (to him) second in the election are still busy dissing the Hosokawa supporters, or in rare cases telling them, "Let's work together again, let bygones be bygones."
Work, like carrying a banner in one of those festive demonstrations with chants and songs and dances, probably.