Several east coast senators are threatening to block today’s expected voteon legislation that contains billions of dollars in emergency farm relief.Iowa Senator Tom Harkin says the easterners are threatening a filibusterbecause they’re unhappy with provisions for dairy farmers.Harkin says the bill -does- have the votes to pass, but the threatenedfilibuster of long floor speeches could delay the vote.Senator Harkin says the package provides about eight-point-seven billiondollars in relief to farmers.