Text messages are the latest tool for political campaigns. Texting is the cheapest way to hook supporters:
In the past midterm elections, direct mail cost campaigns on average $67 a vote. Door-to-door precinct walking cost about $30. And cold calling costs about $20 per vote.In addition to being more cost effective, text messages may be the best way to reach young voters. As many as a third of the estimated 20 million voters under 30 don't even have a land line.
But text messaging can cost a campaign as little as $1.50 per vote.
Watch CBS Mobile News correspondent Cali Carlin's video report: