Computer problems, as well as human ones, have drawn complaints across the US as millions of Americans go to the polls. One Pennsylvania voter highlighted a problem with voting machines on YouTube, complete with video, in which a touchscreen changed his choice from President Barack Obama to Republican Mitt Romney. I initially selected Obama but Romney was highlighted," the man wrote. "I assumed it was being picky so I deselected Romney and tried Obama again, this time more carefully, and still got Romney." This was not the first allegation of foul-ups with electronic machines. In Ohio, some Republicans claimed machines were changing Romney votes to Obama, while Democrats accused Republican state officials of installing untested "experimental" software at the last minute. In Florida, The Tampa Bay Times reported that hundreds of voters received automated "robo-calls" telling them the election was on Wednesday. An official told the paper a glitch in the phone system allowed the calls to go through early on Tuesday, telling voters the election was "tomorrow". A similar glitch was reported in the US capital Washington. The Arizona Republic reported that robo-calls directed voters to the wrong polling stations, and that Democrats claimed it was an intentional effort by Republicans to misdirect people amid a tight Senate race.