Many Arizonans wanting to view the Secretary of State's election results experienced errors while trying to load the website.
The website crashed for the first time shortly after early results were posted around 8 p.m. Tuesday.
The site continued to intermittently produce results throughout the night, occasionally producing messages saying "Error" or "This site can't be reached" or "Service unavailable."
In the weeks leading up to the primary, Secretary of State Michele Reagan said the website had been upgraded to a system that would get results quicker.
She said the results would be posted in real time and that users wouldn't have to refresh the page for updates and new numbers.
There was no immediate word from Reagan's office about what went wrong Tuesday night.