* Stimulus may help Abe's bloc win local elections in April

* Steps aimed at helping regions, households left behind

* No new bond issue involved; keeps fiscal consolidation goal

By Takaya Yamaguchi and Tetsushi Kajimoto

TOKYO, Dec 27 (Reuters) - Japan's government approved on Saturday stimulus spending worth $29 billion aimed at helping the country's lagging regions and households with subsidies, merchandise vouchers and other steps, but analysts are sceptical about how much it can spur growth.

The package, worth 3.5 trillion yen ($29.12 billion) was unveiled two weeks after a massive election victory by Prime Minister Shinzo Abe's ruling coalition gave him a fresh mandate to push through his "Abenomics" stimulus policies. The government said it expects the stimulus plan to boost Japan's GDP by 0.7 percent.

Given Japan's dire public finances, the government will avoid fresh debt issuance and fund the package with unspent money from previous budgets and tax revenues that have exceeded budget forecasts due to economic recovery.

With nationwide local elections planned in April which Abe's ruling bloc must win to cement his grip on power, the package centres on subsidies to regional governments to carry out steps to stimulate private consumption and support small firms.

Of the total, 1.8 trillion yen will be spent on measures such as distributing coupons to buy merchandise, providing low-income households with subsidies for fuel purchases, supporting funding at small firms and reviving regional economies.

REBUILDING AFTER DISASTERS

The remaining 1.7 trillion yen will be used for disaster-prevention and rebuilding disaster-hit areas including those affected by the March 2011 tsunami. Tokyo will also seek to bolster the housing market by lowering the mortgage rates offered by a governmental home-loan agency.

"It's better than doing nothing, but I don't think this stimulus will have a big impact on boosting the economy," said Masaki Kuwahara, a senior economist at Nomura Securities.

"This package directly targets households and regions left behind by Abenomics, so it may work favourably to Abe's ruling coalition in the nationwide local elections."

Kuwahara said the stimulus is unlikely to spur consumer spending amid uncertainty over the economic outlook, adding that it could push up GDP by just about 0.2 percent.

With little room left for Japan to resort to big fiscal spending, analysts say the government must pin its hope on wage hikes by big companies to play a greater role in bolstering the economy and pulling Japan out of deflation.