CREATE TABLE table_8480 ("Election" FLOAT, "Candidate" TEXT, "Number of votes" TEXT, "Share of votes" TEXT, "Outcome of election" TEXT)

What is the number of votes of candidate edward mahama, who had 0.9% share of votes?
SELECT "Number of votes" FROM table_8480 WHERE "Candidate" = 'edward mahama' AND "Share of votes" = '0.9%'
SELECT "Number of votes" FROM "table_8480" WHERE "Candidate" = 'edward mahama' AND "Share of votes" = '0.9%'