Insurance lobbyists are working hard on Capitol Hill in an attempt to sway centrist Republicans into their camp as party leadership expresses strong skepticism toward extending enhanced Obamacare subsidies. As these lobbyists take meetings with GOP staffers and members, however, they likely aren’t mentioning the fact that the firms paying them millions to advance their interests have shifted their campaign contributions toward the Democratic Party.

Humana, the fourth-largest health insurance firm in the nation, for instance, historically favored Republicans through its PAC contributions between 2000 and 2012 by nearly two-to-one margins, according to campaign finance data compiled by OpenSecrets. During 2012, a particularly favorable year for the GOP, for instance, Humana’s PAC gave $413,000 to Republicans and just under $210,000 to Democrats.