CREATE TABLE table_12823 ("Election" TEXT, "1st Member" TEXT, "1st Party" TEXT, "2nd Member" TEXT, "2nd Party" TEXT)

What is 1st Member, when 1st Party is 'Constituency Abolished'?
SELECT "1st Member" FROM table_12823 WHERE "1st Party" = 'constituency abolished'
SELECT "1st Member" FROM "table_12823" WHERE "1st Party" = 'constituency abolished'