CREATE TABLE table_name_86 (elector VARCHAR2, cardinalatial_title VARCHAR2)

What is listed for the Elector that also has the Cardinalatial title of Priest of S. Marco?
SELECT elector FROM table_name_86 WHERE cardinalatial_title = "priest of s. marco"
SELECT "elector" FROM "table_name_86" WHERE "cardinalatial_title" = "priest of s. marco"