Democratic Senate candidate Rep. Patrick Murphy's father recently donated $250,000 to the pro-Murphy super PAC Floridians for a Strong Middle Class, bringing his total contributions to the race to $1.75 million.
The super PAC reported the donations in a quarterly disclosure report filed Saturday night to the Federal Election Commission, the Tampa Bay Times reported.
Multimillionaire Thomas Murphy Jr. donated $1 million to the Senate Majority PAC over the summer, and he and his company, Coastal Construction Group, had previously given $500,000 to Floridians for a Strong Middle Class.
Super PACS are prohibited from coordinating campaign efforts with the candidates, but can raise unlimited funds.
Because of the immediate family connection, Murphy's campaign has received flak for his father's donations.
Last month, a conservative watchdog group, the Foundation for Accountability and Civic Trust, alleged the elder Murphy's donations demonstrated illegal coordination between Patrick Murphy's Senate campaign and the groups his father donated to. His Democratic primary competitor Rep. Alan Grayson made similar accusations earlier this year.
Floridians for a Strong Middle Class ran advertising for Murphy over the summer, but nearly $440,000 of its funds went to Senate Majority PAC, the newspaper reported. Senate Majority PAC pulled millions of dollars in planned advertising for Murphy last month.