* Centre-right parties win strong majority
* Leftist SocDems win most votes but appear to concede
* Social Democrat leader says sees right-wing coalition
* New party kingmaker for centre-right coalition
(Writes through with early results, expected mandates)
By Michael Winfrey and Tomas Dolezal
PRAGUE, May 29 (Reuters) - Centre-right Czech parties that favour budget cuts to prevent a Greek-style debt crisis defeated pro-welfare leftists in an election on Saturday and looked set to form a government that could push through deep economic reforms.
The leftist Social Democrats won the most votes of any party in the election, garnering support of 22.1 percent. But centre-right parties secured a strong parliamentary majority, led by the Civic Democrats on 20.2 percent, according to results with 99 percent of the votes counted.
Their potential allies, conservative party TOP09, had 16.6 percent, and centrist Public Affairs 10.9 percent.
Social Democrat leader Jiri Paroubek, a leftist reviled by conservatives for an aggressive style but favoured by many Czechs for his pledges to raise taxes on companies and the rich to raise social benefits, acknowledged defeat.
"It seems that people have chosen the direction the republic should go in, and it is a different direction than the one the Social Democrats were offering," he said. "It must be clear to everyone that this country is on track for a right-wing coalition. That is obvious."
The result quashed the fears of many Czechs that the Social Democrats could take power with backing from the Communists, who had 11.3 percent. The Communists have not shared power since their totalitarian rule ended in the 1989 Velvet Revolution.
It also reduced the risk of protracted coalition talks spooking investors who are keen for a strong government to nurture the European Union and NATO member through a nascent recovery after its economy contracted by 4.1 percent last year.
RIGHT RISING
Civic Democrat election leader Petr Necas, who warned Paroubek would lead the Czechs to national bankruptcy, said he would aim for "a government of budget responsibility" and his party should name the prime minister of any coalition it led.
He emerged as the party's leading candidate after his predecessor, former Prime Minister Mirek Topolanek, stepped down following a string of public gaffes.
A bespectacled trained physicist, Necas is seen by many Czechs as a thrifty everyman who has managed to distance himself from the scandals that have plagued his party.
If the three centre-right parties join forces, they would have the largest ever majority for a Czech government -- roughly 110 of the 200 seats in parliament -- and could end years of policy gridlock that has caused Prague to lag its other ex-communist peers in pension, healthcare, and welfare reforms.
Some analysts said it should not be taken for granted that Public Affairs, a brand-new party with an anti-graft platform, would join a government. But its leader Radek John said he would prefer to support the right on fiscal reforms.
"We consider it crucial to stop indebtedness and not fall into a Greek crisis," he said. "We probably know how to agree much easier with Mr. Necas, and with TOP09, because I would not trust the Social Democrats much."
MARKET POSITIVE
Many analysts have said a right-leaning cabinet is the best option for the economy and would help lift the crown currency, which fell by 0.8 percent against the euro on Friday on fears that an inconclusive vote would create a weak government.
The Czech Republic has public debt equal to 35 percent of gross domestic product (GDP), half the EU average. But an ageing population -- retirees are expected to outnumber workers by 2050 -- will create large deficits in the pay-as-you-go pension system.
The Civic Democrats have proposed creating private pension accounts, cutting the public deficit to the EU prescribed level of 3 percent of GDP by 2012 from 5.9 percent last year, trimming social benefits, and reforming the welfare and health care systems.
"With the centre-right taking over, the Civic Democrats will hopefully lead a path toward fiscal prudence. They seem pretty committed to trying to bring the deficit down," said Barclays economist Daniel Hewitt. "I think this will be crown-positive."