Augusta, Maine — Two little-known Delaware nonprofits have contributed at least $750,000 to a super PAC running attack ads against likely Democratic Senate candidate Graham Platner, according to Sludge and federal campaign finance records. Sludge reported that Condorcet Initiative Corp. gave $500,000 to Pine Tree Results PAC, while Ardleigh Impact Corporation contributed another $250,000. Pine Tree Results has spent nearly $4 million attacking P…