[cnn-photo-caption image= http://i2.cdn.turner.com/cnn/2010/images/08/13/art.greene.bohn.cnn.jpg caption ="South Carolina Democratic Senate nominee Alvin Greene is unlikely to defeat Republican Jim DeMint in November."](CNN) - Jim DeMint and Alvin Greene have some company.
A high school social studies teacher from Greenville, South Carolina will launch a write-in campaign for U.S. Senate this week, CNN has learned.
The goal, said the teacher, Greg Snoad, is to offer Republicans, Democrats and independents "a chance to make a symbolic vote for civil political discussion."
Snoad, who is active in Democratic politics, told CNN that Greene's unexpected victory in June's Democratic primary made the outcome of the Senate race all but certain.
Greene, a political neophyte who was indicted in August on obscenity charges, stands almost no chance of defeating DeMint, his Republican opponent, in November.
"The way the race has worked out, I think a lot of people are looking for an alternative to the kind of political discourse we have now," Snoad said. "I think this race provides us with an opportunity to give people a chance to cast a vote for that kind of symbolism that maybe another race that's more competitive wouldn't have provided."
Snoad said he has no illusions about unseating DeMint and called his effort "a purely symbolic campaign" that will be conducted almost entirely using social media sites like Facebook and Twitter.
"I would not do this in a race where I could affect the outcome, because I am not running to win the office," he said.
Snoad is not the first write-in candidate in the race; Mazie Ferguson, an attorney from Sumter, announced a bid last month. Tom Clements is running as the Green Party nominee.