It appears that Richard Anderson is wearing a toupee in the campaign poster picture shown in background shots.
When Jason is talking to his sister in her room, when both are in the frame, you can see Jason leaning on the mattress, with his arm straight. When his sister is in close-up, Jason's arm in the background is bent and resting on the headboard.
The photo found on the ground just before the body is actually a photo of a body lying on the ground, not the photo of the cop arresting the daughter that is shown in closeup.
At the preliminary hearing, in the long shots the sheriff is seated behind and to the right of Senator Cartwell, but in the close-ups he is seen over the senator's left shoulder.
The parade supporting Jason Foster clearly occurs at night, but when Perry steps inside from viewing the parade the view out the doorway is a daytime scene and when Paul comes walking in he says "Good morning."
Jason Foster claims that his sister Susan Foster is 18 years old and still a minor, but Lynn Loring who played the role of Susan was 21 years old.
When Jason is talking to his sister in her room, a hand can be seen between the crack of the open door. Perhaps Jan Shepard
(Margaret Foster) waiting for her cue.
In the Foster headquarters, a campaign aide hands Jason Foster a paper which he identifies as "The returns from the first and second districts." Foster says they look good. But it is days before the election, so there wouldn't be any "returns". Possibly it is polling data.