CREATE TABLE table_73863 ("Constituency" TEXT, "Candidate" TEXT, "Affiliation" TEXT, "Votes -cast" FLOAT, "Result - %" TEXT, "Loss/gain" TEXT)

What was the loss/gain when the affiliation was solidarity?
SELECT "Loss/gain" FROM table_73863 WHERE "Affiliation" = 'Solidarity'
SELECT "Loss/gain" FROM "table_73863" WHERE "Affiliation" = 'Solidarity'