Italy parties seek way out of election stalemate

By James Mackenzie and Naomi O'Leary

ROME (Reuters) - Italy's stunned political parties searched for a way forward on Tuesday after an inconclusive election gave none of them a parliamentary majority and threatened prolonged instability and a renewal of the European financial crisis.

The results, notably the dramatic surge of the anti-establishment 5-Star Movement of comic Beppe Grillo, left the center-left bloc with a majority in the lower house but without the numbers to control the upper chamber, the Senate.

Financial markets fell sharply at the prospect of a stalemate that reawakened memories of the crisis that pushed Italy's borrowing costs toward unsustainably high levels and brought the euro zone to the brink of collapse in 2011.

"The winner is: Ingovernability," ran the headline in Rome newspaper Il Messaggero, reflecting the deadlock the country will have to confront in the next few weeks as sworn enemies are forced to work together to form a government.

Ratings agency Standard & Poor's said on Tuesday that policy choices of the next Italian government would be crucial for the country's creditworthiness, underlining the need for a coalition that can agree on new reforms.

Pier Luigi Bersani, head of the center-left Democratic Party (PD), has the difficult task of trying to agree a "grand coalition" with former prime minister Silvio Berlusconi, the man he blames for ruining Italy, or striking a deal with Grillo, a completely unknown quantity in conventional politics.

The alternative is new elections either immediately or within a few months, although both Berlusconi and Bersani have indicated that they want to avoid a return to the polls if possible: "Italy cannot be ungoverned and we have to reflect," Berlusconi said in an interview on his own television station.

For his part, Grillo, whose movement won the most votes of any single party, has indicated that he believes the next government will last no more than six months.