Or at least not for the foreseeable future, and not unless Europe gets much more of a shared public opinion and public debate than it has now - which if it's up to the Brits and some others will certainly not happen. As I said, electing such a leader would be an interesting experiment, but by "interesting" I mean completely unpredictable and liable to yield some rather random results, or a sad spectable with dozens of candidates all failing to reach any significant amount of votes, and most of their votes coming from their own country. I guess you could do primaries per party, but that too would require much stronger European parties than the current ones are, to have any success.