The leadership PAC associated with the Queens kingmaker spent thousands of dollars at horse racing tracks, hotels, airfare and meals.
While Florida is on track to be the most expensive senate race this cycle, Montana and North Dakota have the highest cost per vote.
In the most expensive midterms ever, the cost per vote in one congressional race was north of $200.
Outside spending on the state’s congressional races increased 20 percent between 2016 and 2018, according to Sludge’s analysis.
Billionaire Mayor Michael Bloomberg and his PAC have spent at least $16.8 million on the midterms.
Their campaigns say that donations and campaigning for Democratic candidates have increased since the late September cutoff.
Where's the $100 million former New York City Mayor Michael Bloomberg promised?