Voters in eastern Queens and Long Island are due to make their call Tuesday in a special congressional election to replace George Santos, with Tom Suozzi and Mazi Melesa Pilip on the ballot. The race, which has taken a deeply negative tenor, has appeared to be less a referendum on Santos’ many lies and more a test run for some of the high-profile issues — including immigration, abortion and gun safety — that could determine November’s nationwide elections. It has also been a study in contrasts between its two candidates. The Democratic nominee is the 61-year-old Suozzi, a Long Island lifer, fo…