MILWAUKEE (CBS 58) -- Wisconsin Democratic Senator Tammy Baldwin spoke with CBS 58 on Wednesday, Jan. 15 about participating in President Donald Trump's impeachment trial. 

"I think in order for it to be a real trial, a fair and full trial, that we need to have those witnesses and those documents," said Sen. Baldwin. 

Baldwin added Democrats and even some Republicans expressed interest in allowing those witnesses.

Baldwin joined fellow Democrats in calling for witness testimony.

She also noted that serving as a juror for the Senate impeachment trial is expected to begin early next week.