Plot hole: Peyton had his face burned in the explosion. In fact, he basically lost his lips, so he should not be able to talk very easily. While he could probably learn to speak normally again through other movements with his mouth and tongue, he does so too quickly to make logical sense. And his uncanny ability to almost perfectly mimic his enemies could probably be learned over time, but again is too quick to make sense.
Plot hole: When the clerk is scratching the lottery tickets for the robber, when he scratches the second ticket he only scratches off two out of three numbers on the ticket, but still says it's not a winner.
Plot hole: Hayes continues his harassment by calling the police and provokes Drake into assaulting him. When the police come and sees Hayes injured, they take Drake away immediately without asking any questions or investigating. No law authorities would ever take away someone with mere assumptions or without investigating, regardless of a history of Drake trying to force Hayes out by shutting off the utilities. Completely unrealistic.
Plot hole: In the factory we see the machine that adds the hair to the Dolls it "punches" the doll at standing level. Andy hits the reverse button and they watch a doll go backwards. A few moments later Chucky appears on a cart and now the machine "punches" Chucky to the cart. 2 Errors -1 How did Andy and Kyle not see Chucky on the cart right in front of them. 2. What made the machine go low enough to stick Chucky to the cart.
Suggested correction: 1. Andy and Kyle were looking away, hence they didn't see Chucky. But then, Kyle turns and sees him. 2. We are to presume that the punch machine goes down until it is stopped by the doll it's meant to be "punching" into. So, it just descended until it reached Chucky and the platform he's on. (Additionally, the machine also seems to be malfunctioning given it goes into a sort of overdrive.)
Plot hole: When Sarah gets into her car she turns on her radio right away without turning on the car. Don't you need to start the car first in order to turn on the radio?