By law, no more than three Commissioners can represent the same political party, and at least four votes are required for any official Commission action. This structure was created to encourage nonpartisan decisions.
There are only three now.
Another FEC Commisioner wrote to the GSA, said in part:
Administrator Murphy,
I am deeply disturbed by your delay in issuing President-Elect Biden the ascertainment letter his team needs to begin its transition
I write to you today in my individual capacity as a Commissioner at the Federal Election Commission, one of the federal agencies that participates in the presidential transition process. I am of course concerned that delay on your part will hinder the Commission’s ability to fulfill its responsibilities to the incoming Administration.
.....
The basis of your delay is not clear. It is not the practice of GSA administrators to wait weeks until the states have released official results, nor until the Electoral College has met and voted. GSA administrators’ consistent practice has been to begin working with the apparent successful candidates almost immediately.
There has been no doubt since Saturday that Joseph R. Biden, Jr. and Kamala D. Harris are the apparent successful candidates for the office of President and Vice President, respectively. The race was called in their favor on Saturday morning by the Associated Press and every other major news organization after those organizations calculated that it was mathematically impossible for lawsuits or the outstanding ballots to change the outcome.