Brody Mullins and T.W. Farnam report on money and politics.

Washington’s single biggest lobbying group has grown a whole lot bigger.

The U.S. Chamber of Commerce spent a record a record $34.7 million to lobby the government in July, August and September, according to a hefty lobbying disclosure report filed today. That’s more than $300,000 a day.

The Chamber’s expenditures on lobbying were five times more than it spent on lobbying in the previous three months – and 68% more than the then-record $20.6 million it spent in the same period last year.

Tita Freeman, a Chamber spokeswoman, said the group has spent so much on lobbying because “Congress has taken on the most complex and significant issues that our country faces” including health care, climate change and new regulations on Wall Street. “We felt we needed to get our voice heard,” she said.

By comparison, UPS reported spending $4.4 million on lobbying during the third-quarter, General Dynamics reported $2.5 million and Koch Industries reported $2.1 million.