Voting machines around the United States are coming to the end of their useful lives. That could be a serious problem for next year's presidential elections. According to a new report by the Brennan Center for Justice ... 43 states will use some voting equipment next year that's at least 10 years old. "We're not saying that all the systems are going to fail on Election Day. But the closer you get to this end of projected lifespan, the more likely you're going to see problems," said Larry Norden, one of the report's authors. Problems such as vote flipping - that's when a voter presses one candidate's name only to have the opponent's name light up. It happens when the glue on touch-screen machines gets old and erodes. Norden said everything's coming to a head at once because almost every state bought new computerized voting equipment right after the disputed 2000 election, using $2 billion in federal aid. But he says now there's neither the money nor the same sense of urgency. "More than one official has said to me [that] legislators [and] county funders are waiting for a disaster, which I think is crazy," he said. Disaster does seem increasingly possible. Earlier this year, the state of Virginia realized that machines used in 20 percent of the state were vulnerable to hackers and immediately ordered them replaced. The Brennan Center found a similar pattern in other states. Wealthier counties are getting new equipment, while poorer ones are not.