AUGUSTA – Two Democratic state senators said Monday that two of their Republican colleagues were defrauding Maine taxpayers by double-dipping on their expense reports for lodging and travel. Sen. John Patrick, D-Rumford, along with Senate Minority Leader Justin Alfond, D-Portland, said Republican Sens. Andre Cushing of Newport and Ron Collins of Wells had inappropriately requested expense reimbursement from the Senate office for things they had previously paid for with reelection campaign funds or political action committee funds. “His big donors had already paid for the damn trip, he didn’t have any shred of right to make the taxpayers pay them back,” Patrick said of Cushing in a State House press conference.