You can watch the first debate from September 11 in its entirety on the Lisa for Maine Facebook page, C-SPAN or Youtube. You can also find video clips of each candidate's answer to each question here.
The second debate in Maine's ranked-choice voting Senate race was held September 28 on WAGM. You can watch the video here.
See the Lisa for Maine campaign statement on Lisa's exclusion from the WMTW debate and the video of Lisa confronting WMTW here.