Campaigns Try New Web Tactics In Battle to Tap Fresh Supporters

With the help of a massive database of potential Democratic supporters, Democrats are trying to erase Republicans' long-held advantage on the ground in elections. For years, Republicans have used the party's so-called Voter Vault, a database of potential supporters fine-tuned over many elections, to target, motivate and secure the backing of voters. This year, the Republicans are matching information from the Voter Vault to Internet searches to serve up ads to potential supporters and using social-networking sites to identify potential volunteers.