Many Ukip supporters come from sections of society with high rates of computer illiteracy, shadow business secretary Chuka Umunna has claimed.
The Labour frontbencher said "a lot of those" who voted for Nigel Farage's party are unable to perform basic tasks online.
He told BBC1's Andrew Marr Show that Labour would "empower people".
He said: "The BBC has carried out some very interesting research on this. One in five people in our economy cannot do the four basics online of sending and receiving an email, browsing the internet, filling in an online form.
"Now there's been a lot of talk about communities who've been disconnected from our global economy and those of course were a lot of those who were voting for Ukip in the local and European elections.
"And of that mass of people who can't do the things that all of us take for granted, a very large number of them are from those communities.