By Lylah M. Alphonse, Yahoo! News

An unexpected glitch almost caused one central Pennsylvania voter to cast his ballot for the wrong candidate, highlighting concerns about voter fraud on an already tense election day.

“I initially selected Obama but Romney was highlighted,” writes Centralpavote on YouTube. “I assumed it was being picky so I de-selected Romney and tried Obama again, this time more carefully, and still got Romney.”

A software developer, he tried troubleshooting the screen. “I first thought the calibration was off and tried selecting Jill Stein to actually highlight Obama. Nope. Jill Stein was selected just fine. Next I de-selected her and started at the top of Romney’s name and started tapping very closely together to find the ‘active areas.’ From the top of Romney’s button down to the bottom of the black checkbox beside Obama’s name was all active for Romney.”

A few more taps and he discovered that the only way to select Obama was to click on a small sliver of the screen. All of the buttons for the other candidates seemed to work fine.

Other voters at the precinct didn’t have the same problem, he said, and the volunteer didn’t seem concerned. “She him hawed for a bit then calmly said, ‘It’s nothing to worry about, everything will be OK,’ and went back to what she was doing,” he wrote. “I then recorded this video.”

Read the full story via Watch: As voters head to polls, reports of problems start pouring in | The Ticket – Yahoo! News.