CREATE TABLE table_78208 ("Date ( s )  conducted" CLOB, "Polling organisation/client" CLOB, "Cons" CLOB, "Plaid Cymru" CLOB, "Lib Dem" CLOB, "Others" CLOB, "Lead" CLOB)

Name the others for cons of 21% and lead of 24%
SELECT "Others" FROM table_78208 WHERE "Cons" = '21%' AND "Lead" = '24%'
SELECT "Others" FROM "table_78208" WHERE "Cons" = '21%' AND "Lead" = '24%'