CONCORD, N.H. — Supporters of allowing severely ill people to use marijuana in New Hampshire are making one last plea to lawmakers before they vote on whether to override Gov. John Lynch’s veto of a legalization bill.

The New Hampshire Coalition for Common Sense Marijuana Policy is running half-page ads in several newspapers on Tuesday urging lawmakers to support the override on Wednesday. The bill’s sponsor and several cancer survivors also are holding a news conference Tuesday morning.