TRENTON The state’s contentious U.S. Senate campaign may be grabbing the attention this election season, but New Jersey voters also will consider three ballot questions about additional funding for property tax relief, road and mass transit and parks. On Nov. 7, voters will be asked whether to amend the state constitution to use: Half the money earned from this year’s sales tax increase to ease the state’s highest-in-the-nation property taxes. More money from the state’s gasoline tax to pay for road, bridge and mass transit improvements. Money from corporate income taxes to improve and preserve parkland. Neither of the three measures would increase existing taxes, although the property tax relief question relates to an increase in the sales tax from 6 percent to 7 percent. Debate over the sales tax increase triggered a budget stalemate that closed most government services for a week in July. The budget deadlock ended when sparring Democrats agreed to let voters decide whether half the $1.2 billion earned from the sales tax increase should go toward property tax relief. Gov. Jon Corzine has proposed using the money to increase property tax relief to homeowners and entice local governments to merge and share services. Assembly Speaker Joseph Roberts Jr. said the amendment would ensure money from the sales tax increase isn’t spent on other government spending. “If this were strictly done by statute, any subsequent governor could change his mind and use the sales tax proceeds anyway he chose,” Roberts said. The three questions haven’t provoked opposition. Voters haven’t defeated a public question since 1990, when they rejected borrowing $135 million for affordable housing. When it comes to transportation funding, the state relies heavily on a 14.5 cent per gallon gasoline tax. Of that amount, 9 cents goes into a trust fund used to maintain and repair roads, highways, bridges and mass transit. Increasing that dedication to 10.5 cents would raise an additional $78 million for transportation. State parks, meanwhile, have an estimated $250 million in overdue repairs. The proposed constitutional amendment would dedicate $15 million annually from corporate taxes to parks and land preservation through 2015 and $32 million per year thereafter.