Table: london_2008_election
Columns: party
votes
share
change
seats

Question: Name the change with share of 2.9%
SQL: SELECT "change" FROM london_2008_election WHERE "share" = '2.9%'

Question: Name the change for english democrats
SQL: SELECT "change" FROM london_2008_election WHERE "party" = 'english democrats'

Question: Name the average votes for one london
SQL: SELECT AVG("votes") FROM london_2008_election WHERE "party" = 'one london'