I saw this New York Times article:
Mr. Trump’s presence in the 2016 race has already had pernicious effects, but they’re nothing compared with what would happen if he were the Republican standard-bearer. The nominee, after all, is the leader of the party; he gives it shape and definition.
According to normal grammar rules, one should write "he is", "he was", "they are", and "they were". So, in the article above, is "he were" wrong? Should "he were" be changed to "he was"?