According to Wikipedia...
Powerball
MegaMillions
Is it just me or are there other states without both?
I guess it's up to the Lottery Commission. They are more focused on controversial legislation that would allow the proliferation of video-lottery machines. Hotels are against it, but the government wants it because they need money. Many people agree these should remain within casinos inside tourism zones, citing crime as a reason not to proceed with this legislation. So it's a fight within the government agencies lol. Money talks.
Currently, many stores have installed these illegally, so the government has no guarantee the money they pull in is the correct figure. In addition, they have no idea how many video-lottery machines have been installed.