CPI:

A secretive nonprofit group that helped boost Senate Majority Leader Mitch McConnell of Kentucky during his hotly contested 2014 re-election bid itself raised more money than McConnell’s challenger, Alison Lundergan Grimes, according to copies of the group’s tax filings obtained by the Center for Public Integrity.

The Kentucky Opportunity Coalition raised more than $21 million during 2013 and 2014, including $15 million last year alone, according to documents the group filed this week with the Internal Revenue Service. Most of the money came from just a handful of wealthy — and anonymous — donors.