Rep. Carolyn McCarthyCarolyn McCarthyWhy Congress needs an openly atheist member, now Lobbying World Lobbying world MORE (D-NY) has made it clear that she may launch a primary challenge against Sen. Kirsten Gillibrand (D-NY), whom McCarthy deems too conservative to represent one of the most liberal states in the country.

But McCarthy may have a problem of her own to clear up before she sets her sights on higher office. McCarthy's top contributor this cycle is the now-defunct PMA Group. In the current election cycle, McCarthy has received $23,500 either directly from the PMA Group or from its employees, according to the Center for Responsive Polirics. That's roughly double the next highest donor. Over the course of her career, McCarthy has received $43,200 from the PMA Group.

Moreover, McCarthy has voted against a resolution that would initiate an ethics investigation into the relationship between lawmakers and the PMA Group, which the FBI raided in November and is currently investigating.

That vote is complicated by McCarthy