Britain's respected Financial Times daily endorsed the Labor party Tuesday, snubbing the ruling Conservatives - the party of big business - for its poor relations with the European Union.

Labor already has won support from Britain's two biggest-selling papers, the Sun tabloid and the News of the World, in the final days leading to Thursday's national elections.The Financial Times said Prime Minister John Major's Conservatives, by default, had opened the door for Labor and its leader, Tony Blair, with its internal feuding. Polls show Blair with a big lead over Major.

"This year, the issue for the business community is whether Britain can remain constructively engaged in Europe," the newspaper said. "If this is the question, there is only one answer. The Conservative party has reached a point which makes it all but impossible for its leaders to implement rational policies towards Europe."

The support of the business daily represents a coup for Blair, who has moved Labor away from its socialist roots to the political center and courted big business by saying the party will maintain Tory-style capitalism.

Meanwhile, police closed parts of four main highways in the London area Tuesday because of a series of security alerts, and the BBC reported: "It seems the IRA has been at it again."

Eight days after the IRA disrupted most of London's transport system with bomb threats, the new security alerts forced evacuation of parts of Heathrow and Gatwick airports.

The Irish Republican Army has set off a series of security alerts accompanied by some small explosions in the runup to Thursday's national election.