With West Virginia's Don Blankenship back in the news — we also got some answers over the weekend when it comes to campaign finance in the primary that Blankenship lost earlier this month. 

Anti-Blankenship super PAC Mountain Families — which had long been linked to pro-Mitch McConnell allies — officially filed paperwork with the FEC on Sunday showing that it was exclusively financed by a $1.4 million contribution from Senate Leadership Fund, a McConnell-controlled group. 

Because of the intricacies of campaign finance law, Mountain Families PAC was able to avoid officially disclosing its donors until after the primary election. 

Another outside group that intervened in the GOP primary, Duty and Country, disclosed Sunday that it benefitted from hefty donations from wealthy donors in New York, Chicago and the Boston area. That group ran ads attacking Blankenship's GOP rivals — Patrick Morrisey (who won) and Evan Jenkins — in the effort to boost the former inmate's campaign.