Big Labor is reaching deep in their pockets to sway votes in the 2016 campaign.

In fact, the Wall Street Journal reported that labor unions “have spent close to $110 million on the elections from January 2015 through the end of August, which is close to 40 percent more than the $78 million spent at the same point in 2012.”

The AFL-CIO, specifically, has spent $11.4 million (quick reminder: the organization endorsed Clinton in July). Additionally, just before the third debate, the Service Employees and iAmerica Action initiated their $3 million advertising campaign on Spanish-language television stations. The advertisements highlight Trump’s “build a wall” platform.

Unions are also focusing heavy on the Senate races, as the Senate has the final say in presidential appointees to agencies like the NLRB and the DOL.

Not only is Big Labor contributing heavily financially, the AFL-CIO has also set into play some major plans to persuade voters during the last three weeks of the campaign. The organization is reported to have pulled together 100,000 volunteers. Their goal is to speak with voters directly by knocking on at least 1 million doors and ramping up phone and direct mail efforts.