In April of this year, The Free Thought Project published an article Land of the Free? Harvard Study Ranks America Worst in the West for Fair Elections in which it says
As if further proof could possibly be needed of the sorry state of the American electoral process, a new study just ranked the United States dead last in electoral integrity among established Western democracies.
The Electoral Integrity Project (EIP)’s 2015 Year in Elections report is an independent research project by 2,000 elections experts from Harvard University and the University of Sydney in Australia assembled to examine the world’s elections.
This reminded me of the many articles and books (e.g., by Bev Harris) suggesting widespread election fraud in U.S. elections, especially in Ohio in 2004 and 2008. Election fraud would be harder if there were a paper trail or other means of verifying vote counting. I looked at the Wikipedia article on Electoral Fraud, wondering if people had proposed eliminating the secret ballot. Would you be willing to sacrifice the right to a secret ballot in exchange for a the ability to verify votes?
The secret ballot, in which only the voter knows how individuals
have voted, is a crucial part of ensuring free and fair elections through preventing voter intimidation or retribution.It was sometimes practiced in ancient Greece and was a part of the Constitution of the Year III of 1795, it only became common in the nineteenth century. ….
I changed it to say:
The secret ballot, in which only the voter knows how they have voted, is believed by many to be a crucial part of ensuring free and fair elections through preventing voter intimidation or retribution.  Others argue that the secret ballot enables election fraud (because it makes it harder to verify that votes have been counted correctly)   and that it discourages voter participation . Although the secret ballot was sometimes practiced in ancient Greece and was a part of the Constitution of the Year III of 1795, it only became common in the nineteenth century. ….
(I referred to [49=Why You Should Expect Challenges To Secret Ballots], [50=Consequences of the Secret Ballot and Electronic Voting], [51=Scrap the Secret Ballot], and [52=Abolish the Secret Ballot].)
I believe my edit is valid, because the original wording stated as a fact that “is a crucial part of ensuring free and fair elections.” That’s not a fact. It’s an opinion. It will be interesting to see if someone undoes my editing. In Battle over the facts concerning Chuck Hagel I discuss a previous experience with editing a wikipedia article.
I also edited https://en.wikipedia.org/wiki/Secret_ballot#Criticism, adding “Some people believe that the secret ballot enables election fraud and so should be eliminated  or supplemented with other ways of verifying voting, such as cryptographically secure reciepts.  “.