The conservative lobbying and grassroots group FreedomWorks disclosed spending more than $2.7 million, the most it ever has reported shelling out, for federal lobbying campaigns in just three months this year.

Opposition to health care proposals such as “Medicare for All” and a Democrat-backed bill that would rein in prescription drug prices drove much of the work, said Jason Pye, FreedomWorks’ vice president of legislative affairs.

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FreedomWorks last year disclosed spending nearly $1.9 million on lobbying for the entire 12 months, according to lobbying reports. In just the period from July 1 through Sept. 30 of this year, FreedomWorks disclosed spending $2.7 million, the group disclosed in its third-quarter lobbying report filed to the clerk of the House and the secretary of the Senate. Pye confirmed in a phone interview that the disclosure was accurate.

“We are spending a lot of time on health care in our office,” Pye said, adding that many of the expenses that FreedomWorks reported were aimed at mobilizing its network of grassroots activists to contact their members of Congress.