@Lordyaswas,
The first time I saw anything like that was two years ago, if I recall correctly, and continues here today. The explanation had something to with the closed booths we used to use were subject to inaccurate readings since is was a computer touch screen. Now, we (in New Mexico) take our hand marked paper ballots and feed them into, guess what? a computer.
If that explanation is puzzling to you, you are not alone.