LOCKPORT – The Niagara County Legislature is expected to vote Tuesday to ask the State Legislature to pass a law allowing the county to impose an 8 percent sales tax for two more years.

Authorization for the tax otherwise would expire Nov. 30. The county raised the sales tax from 7 percent to 8 percent in 2003, and has had to review it every two years since then.

By state law, Niagara County is required to apply the proceeds of the extra 1 percentage point to its Medicaid costs.