That's a bit idealist to want that really though Bill.
*It's also what i want though*
But we've got to blame certain political scientists like Antony Downs(in the 1950s and 60s) who through research found that most voters lay in the centre between left and right.
If anything i'd say most of the electorate, with reference only to Europe is mainly slightly to the right of centre.
But if anything it's about striking a balance between going for the centre ground and somehow remaining different from your rivals, which cannot be done effectively also if certain constituencies mean more votes wise than others.....