Two Republicans have filed paperwork for the 2020 Congressional election, vying to unseat Democratic freshman 5th District Representative Jahana Hayes.  Waterbury resident Ruben Rodriguez, a Puerto Rico native, is a meter technician for New Britain’s Water Department.  David Xavier Sullivan, a former assistant U.S. attorney from New Fairfield, retired from the Department of Justice last month after 30 years.  The state Republican party will hold nominating conventions next year.