CREATE TABLE table_73861 ("Constituency" TEXT, "Candidate" TEXT, "Affiliation" TEXT, "Votes -cast" FLOAT, "Result - %" TEXT, "Loss/gain" TEXT)

How many votes were cast when the constituency was midlothian?
SELECT "Votes -cast" FROM table_73861 WHERE "Constituency" = 'Midlothian'
SELECT "Votes -cast" FROM "table_73861" WHERE "Constituency" = 'Midlothian'