Japanese PM wife's name 'removed from documents'

* Abe has denied he or wife intervened in land sale
* Finance Minister Aso in hot seat
* Abe's ratings slip on suspected scandal cover-up

The name of Japanese Prime Minister Shinzo Abe's wife was removed from documents regarding a suspected cronyism scandal, media said on Monday, as pressure mounted on the premier and his ally Finance Minister Taro Aso over a possible cover-up.
Abe, now in his sixth year in office, had tried to put behind him questions over the sale of state-owned land at a huge discount to a school operator with ties to his wife, Akie.
The issue last year sharply eroded Abe's popularity. His ratings rebounded thereafter, but doubts over Abe and his cabinet have been revived with a series of fresh revelations.
Abe has repeatedly denied he or his wife did favours for school operator Moritomo Gakuen, which bought the land, and has said he would resign if evidence were found that they had.
Former Moritomo Gakeun head Yasunori Kagoike and his wife were arrested in July on suspicion of illegally receiving subsidies.
Suspicions of a cover-up could slash Abe's ratings and dash his hopes of a third term as leader of the ruling Liberal Democratic Party (LDP). Victory in the LDP September leadership vote would put him on track to become Japan's longest-serving premier.
"The involvement of Mrs. Abe has deepened. This has entered the stage where the responsibility of the prime minister himself will be called into question," opposition Democratic Party leader Yuichiro Tamaki, was quoted saying by Kyodo news agency.
The doubts have also sparked calls for Aso to quit, but the finance minister said on Friday that he will not step down.
Aso plans to hold a news conference later on Monday.
A finance ministry official said that 14 items had been altered in the documents after February -- when the scandal broke - at the instruction of the ministry's finance division to match testimony in parliament.
Chief Cabinet Secretary Yoshihide Suga on Monday did not directly respond to a question by reporters about Akie Abe but said that the finance minister Aso should investigate the facts.
"What is important is to make everything clear," he said.
Aso's survival?
Opposition politicians have called for Aso to resign.
The backing of Aso, 77, who doubles as deputy premier, is vital to Abe's bid for a third term and a key factor in the stability of his administration.
"At the very least, it seems that Aso’s chances of surviving as finance minister are diminishing rapidly," wrote Tobias Harris, vice president of consultancy Teneo Intelligence, in an email. He said there was no "smoking gun" showing direct intervention by Abe or his wife.
But Harris added: "It now seems to be more a question of whether Abe can manage an orderly exit at the end of his term in September or whether he’ll resign hastily again - but I don’t see how he can win a new mandate amidst the Abe fatigue that will surely grow after these revelations."
On Friday, National Tax Agency chief Nobuhisa Sagawa abruptly resigned over his remarks in parliament about the case.
Sagawa headed the ministry division that submitted the documents before he was tapped as tax agency chief in July, an appointment critics saw as a reward for his efforts to diffuse the issue with his statements to parliament last year.
Some LDP members said the saga could undermine the party.
"It is inconceivable that the bureaucrats on the spot had such authority (to alter the documents)," media quoted Shigeru Ishiba, an LDP lawmaker who has made no secret of his desire to challenge Abe in the party race, as saying on the weekend. "If we don't make clear who did this, trust in the LDP will waver."
Abe, 63, swept back to power in December 2012 promising to revive the economy and bolster Japan's defence. It was a rare comeback for the conservative lawmaker, who quit abruptly in 2007 after a year in office marked by scandals in his cabinet, a deadlocked parliament and ill health.
His ruling bloc won a two-thirds "super majority" in a October lower house poll, helped by opposition disarray.
A March 9-11 survey by the Yomiuri newspaper showed support for Abe's cabinet has now fallen to 48%, down six points from a month earlier. Non-support rose to 42% and 80% said that the matter had not been handled appropriately.