(Repeats story published late on Tuesday)
* Czech court halts decree on Oct 9-10 election
* President Klaus says decision surely delays polls
* Court says not possible to set date until final ruling
By Jan Lopatka and Jan Korselt
PRAGUE, Sept 1 (Reuters) - A Constitutional Court ruling threatened the Czech Republic's October parliamentary election on Tuesday, causing political confusion as the country struggles with the economic crisis and a ballooning budget gap.
The Czechs clawed their way out of a deep recession in the second quarter and were heading into the Oct. 9-10 vote with markets hoping for action on the spiralling public deficit, which politicians said could lead to a Hungary-style meltdown.
President Vaclav Klaus said the court's ruling had surely delayed the election and led to a political and constitutional crisis, which he would try to resolve as soon as possible.
"I am deeply concerned by today's Constitutional Court decision... which in fact means a postponement of the lower house election indefinitely," Klaus said in a statement.
The court decided to freeze a presidential decree calling the election, pending further deliberations on a complaint by a member of the outgoing parliament.
The ruling follows a number of political crises that have struck the 10-million EU member country in recent years when tight elections produced weak governments. The instability had culminated in March when a centre-right cabinet collapsed midway through the country's term as EU president.
The turmoil pushed the Czech crown lower, and dealers said bonds could face pressure on Wednesday.
An election delay would extend the rule of the non-partisan interim cabinet led by Jan Fischer, which took over in May. It was supposed to stand down after the election, called before regular polls due in mid-2010.
The court said in a ruling posted on its website that it was halting the validity of Klaus's decree calling the election pending a full consideration of the deputy's complaint.
"It will be possible to set a new date for the election only after a final decision of the Constitutional Court," the court said in a statement.
The court did not say when it would rule on the complaint -- filed by independent Milos Melcak in protest of a law that cut the four-year election period short after the centre-right cabinet collapsed in March -- but it typically takes months.
Constitutional Court judge Vojtech Guettler told Reuters he could not predict when the court would rule, and news website www.ihned.cz quoted judge Eliska Wagnerova as saying she did not expect the court would rule in time.
BUDGET IN FOCUS
Fischer said the government would discuss the developments, and Klaus invited heads of political parties on Wednesday to find a way out.
Fischer has fought for spending cuts to avoid the budget deficit booming beyond 7 percent of the gross domestic product next year, but has found little support among political parties.
Economists said, now that his cabinet could potentially stay on longer, the outlook for public finances could worsen significantly unless the main political parties shifted from their pre-election aversion to belt-tightening.
"We've had this spiralling budget deficit which has gone unchecked due to the impasse in politics, and it was assumed that it had been left for the new government to sort out," said Neil Shearing, economist at Capital Economics. "If we're left in political impasse, the budget situation could get worse."
The news caused the Czech crown <EURCZK=> to extend losses on the day amid a wider bout of risk aversion on global markets that also hit the Polish zloty and Hungarian forint.
By close of domestic trading, the crown <EURCZK=> had fallen 0.8 percent to 25.614 to the euro. Bonds were muted but dealers said they could face pressure on Wednesday.
Political leaders sharply criticised the court.
"I consider ... the ruling to be an irresponsible step that can have fundamental negative impact not only on the political development in the country, but also deepening of the economic crisis," said the head of the right-wing Civic Democrats, Mirek Topolanek, the prime minister in the previous government. (Additional reporting by Jan Korselt and Jason Hovet; Writing by Jan Lopatka and Michael Winfrey; Editing by Angus MacSwan)