Question: Name the change with share of 2.9%
SQL: SELECT "Change" FROM "2-15163175-2" WHERE "Share" = '2.9%';

Question: Name the change for English Democrats
SQL: SELECT "Change" FROM "2-15163175-2" WHERE "Party" = 'English Democrats';

Question: Name the average votes for One London
SQL: SELECT AVG("Votes") FROM "2-15163175-2" WHERE "Party" = 'One London';