Is the Vice-President required to resign from their current position before being eligible for election as Vice-President?
Yes, according to the context provided in Article 65, subsection (2), "When the President is unable to discharge his functions owing to absence, illness or any other cause, the Vice-President shall discharge his functions until the date on which the President resumes his duties." This implies that while the Vice-President acts as President, they must temporarily resign from their previous position. Furthermore, Article 66, subsection (2), explicitly states "if a member of either House of Parliament or of a House of the Legislature of any State be elected Vice-President, he shall be deemed to have vacated his seat in that House on the date on which he enters upon his office as Vice-President." This confirms that the Vice-President must resign from their current position before being eligible for election as Vice-President.