Election and representation

A former Chief Election Commissioner joined a political party and
contested elections. There are various views on this issue. One
view is that a former Election Commissioner is an independent
citizen and has a right to join any political party and to contest
election. According to the other view, leaving this possibility open can affect the impartiality of the Election Commission. So, former
Election Commissioners must not be allowed to contest any
elections. Which position do you agree with and why?