According to Atticus Finch in "To Kill a Mockingbird," the one person on the jury who had trouble agreeing to the guilty verdict was one of the Cunninghams. However, it is not explicitly stated in the book which Cunningham it was.
It has to be a unanimous decision - or - a majority of at least 10 people agreeing to the verdict.
Miss Maudie views Atticus as a principled and honorable man, and she believes in his ability to uphold justice fairly. She respects his integrity and admires his courage in defending Tom Robinson despite the unjust verdict of the trial.
Scout has a feeling that she knows the verdict before she hears it. Right before the jury returns with the verdict, she feels the same way that she did the morning Atticus shot the mad dog. Scout knows that Atticus is doing what needs to be done, but something unhappy or sad will come out of it. The colored people stand out of respect for Atticus. They are appreciative that he tried his best to defend Tom Robinson and put his entire reputation on the line to see justice served.
Lee uses humor to lighten the mood and change the tone of the conversation between Atticus and the children about the jury's verdict by having Scout and Jem mimic the jury's decision-making process in a playful way, making the situation more digestible and less heavy. By incorporating humor, Lee helps to soften the blow of the disappointing verdict and provides a moment of levity amid the seriousness of the situation.
Waiting for the verdict is similar to the mad dog scene in that there is a tense anticipation for the outcome, with emotions running high and the potential for a significant impact on the characters. Watching Atticus with an empty gun is like seeing his moral strength and integrity on display, showcasing that his power lies in his principles and not in violence or force.
Atticus predicts that Tom will be sent to the electric chair if the appeal is lost because he knows that the racial prejudice in the town will prevent Tom from receiving a fair trial and a just verdict.
This is all from memory and may be unreliable as a result, but I believe Atticus goes into the case with the expectation that he will lose, as he is aware of the weight of the prejudice acting against Tom Robinson. During the actual court case itself it would appear that Tom is innocent and Atticus is likely to win but this is only based on modern perspective of the events in the book. The jury's verdict is surprising in light of this.
Aunt Alexandra tells Atticus that as much as she respects him for defending Tom Robinson, his actions have brought disgrace on the family. She reveals her disappointment in his decision to take on the case and expresses her belief that he should not have defended a black man.
Atticus rises from his chair in the courtroom as a sign of respect when the jury returns with their verdict. This action symbolizes his acknowledgment of the court's decision and his commitment to upholding the principles of justice and fairness.
After Atticus Finch left the courthouse following the verdict of Tom Robinson's trial, the Black community in the balcony stood up in a show of respect and solidarity. They silently honored Atticus for his principled defense of Tom, acknowledging his courage in the face of racial injustice. This moment underscored their gratitude and support for Atticus, despite the outcome of the trial.
He knows that Tom Robinson will lose, but feels that "just because we were licked a hundred years before we start" doesn't mean they can give up.
Atticus predicted that Tom Robinson would be found guilty due to the racial prejudices of the jury, despite the lack of evidence against him. He knew that the justice system would not deliver a fair verdict in this case.