The evidence suggests that he's to blame, but let's be careful not to 'jump to conclusions'. He may have a good explanation for what happened.
At this point, his victory seems to be a 'foregone conclusion'. [=his victory seems certain; there seems to be no doubt that he will win]
Most people felt that the outcome of the trial was a 'foregone conclusion'. [=they felt sure that the trial would end in a certain way]
(..) Well, I guess that's it. Let's get out of here. - No, Peter, the other thing. - Oh, right. My name is Peter Griffin, and I get to the "in conclusion" part of my speech faster than most people. In conclusion, I think the school should rehire Principal Shepherd. (CHEERING, APPLAUSE) (..)2020 TvShow: Family Guy Title: Movin' In (Principal Shepherd's Song) Season: 18 Episode 20