Spain's right-wing opposition Popular Party is set for a record victory over the ruling Socialists in November 20 general elections, a poll said Friday.

Of those questioned, 46.60 percent backed the PP, compared with 29.91 percent for the Socialists, said the survey of 17,500 people by the Centre for Sociological Investigation, a public body.

If translated into seats on election day, 56-year-old opposition leader Mariano Rajoy's party would enjoy a landslide and take an unprecedented 190-195 of the 350 seats in the lower house of parliament, it said.

That would be an even bigger win than former PP prime minister Jose Maria Aznar's re-election in 2000, when the party took control of 183 seats.

The Socialists, being led into the election fray by 60-year-old former interior minister Alfredo Perez Rubalcaba, appear headed for their greatest defeat in history with only 116-121 seats in prospect, it said.

At the moment, the Socialists led by Prime Minister Jose Luis Rodriguez Zapatero, who has decided not to run again after eight years in office, have 169 seats to the PP's 154.

According to the poll, which was taken in October, the nationalist conservative Catalan party Convergence and Union would be the third force in the country, boosting its seats from 10 to 13.

In the Basque Country, voters would cut the moderate pro-Basque nationalist party PNV's seats from six to three, the survey said.

Amaiur, a left-leaning pro-Basque independence party, would enter parliament with three seats, making its debut after armed secessionist group ETA last month declared an end to violence, it said.

Spain transformed into a democracy after the death of General Francisco Franco in 1975, holding the first general elections since the dictatorship on June 15, 1977.