How many venues were there for the match on November 6? 
CREATE TABLE "table1_19576091_1" (
  "scorecard" real,
  "date" text,
  "venue" text,
  "team_1" text,
  "team_2" text,
  "result" text,
  "man_of_the_match" text
);
SELECT COUNT("venue") FROM "table1_19576091_1" WHERE "date"='November 6';