Estonia has sucessfully conducted an national election with online voting option.
A tiny Baltic nation last week became what appears to be the first country to open its local elections to Internet voting on a nationwide level--although only about 1 percent of the votes were cast online. Check out the full article here Estonia pulls off nationwide Net voting
Needless to say, internet voting would save lot of time and energy for almost everybody. But I seriously donno whether in near future it would be possible in India! I personally feel that we need to improve a lot in the following fields "Security", "Infrastructure" and "Computer awareness". I don't think this would be possible here in India or Tamil nadu for atleast next 10 years.