Senator Lisa Murkowski (R-AK), a key swing vote in the impeachment trial, said Friday she will vote against calling more witnesses.

“The House chose to send articles of impeachment that are rushed and flawed. I carefully considered the need for additional witnesses and documents, to cure the shortcomings of its process, but ultimately decided that I will vote against considering motions to subpoena,” Murkowski said in a statement.

“Given the partisan nature of this impeachment from the very beginning and throughout, I have come to the conclusion that there will be no fair trial in the Senate. I don’t believe the continuation of this process will change anything. It is sad for me to admit that, as an institution, the Congress has failed.”

The move means the trial will likely result in an acquittal of President Donald Trump.