Elon Musk Pumps $75 Million Into Donald Trump’s Presidential Run

America PAC, which is focused on turning out voters in closely contested states that could decide the election, spent around $72 million of that in the July-September period, according to disclosures filed to the Federal Election Commission.

Musk, the CEO of electric car manufacturer Tesla, was the sole donor to the group in that period.

America PAC declined to comment on the Musk donations. Musk did not immediately respond to a request for comment.

The group, which started its work later in the election than other PACs, has encountered some problems with hiring and its contractors. Since July, it has fired two major contractors it has hired to knock on doors.

It has also struggled to hire door knockers in several battleground states in part because by the time the PAC became operational many other canvassing groups had already staffed up, a half-dozen sources briefed on the issues told Reuters.

The group had around $4 million left on hand by the end of September, the filings show.