One of the significant features of the presidential race right now is that an average of polls shows the challenger, Joe Biden, running above fifty percent. As Harry Enten of CNN points out, this is highly unusual.

For now though, we can say Biden’s doing better than any challenger heading into the major party conventions since scientific polling began.

In the 13 previous elections in which an incumbent was running for another term, no challenger has ever been at or above 50% in the polls at this point in the campaign. The closest were Jimmy Carter in 1976 and Thomas Dewey in 1948. Carter was at about 49%, while Dewey came in at between 48% and 49%.

Most challengers were not even near that mark. The average opponent to the incumbent comes in at a mere 38% since 1940. Biden is nearly 15 points higher than that at this time.

To give but one example, the CBS News Battleground Tracker has Biden ahead 52 percent to 42 percent, with a small 2.5 percent margin of error. That still leaves 6 percent either undecided or committed to a third party candidate. There isn’t much evidence of hidden Trump support this time around, and going back several weeks now, Biden has held a significant advantage with voters who are either undecided or dislike both candidates. In the latest PBS NewsHour/NPR/Marist poll, Biden’s lead with the haters stands at 52-33. On the whole, it seems like the former vice-president has a strong edge when we look for areas of potential growth, including, to my surprise, with black voters under thirty who, prior to the selection of Kamala Harris as Biden’s running mate, were showing a shocking level of apathy about voting at all and some seriously tepid levels of support for the Democratic Party.

If you’ve noticed some implausible-seeming survey numbers for Trump among black voters, this is probably why, and it’s unlikely to materialize for him. Much more likely, Biden will get well north of ninety percent of their votes, and turnout could be close to Obama-level numbers.

Having said all this, FiveThirtyEight currently gives Trump a 27 percent chance of winning the Electoral College, which really demonstrates the advantages of incumbency and the conservative bias inherent in how we choose our president. We probably shouldn’t expect much of a convention bounce for Biden this week, both because it won’t be a typical convention and because convention bounces have become increasingly less pronounced in recent cycles. This will also work against Trump when the time comes for him to do whatever he’s going to do from the White House lawn.

I don’t think we should expect a whole lot of movement in the race from where it stands right now, but unforeseen events can always have an influence. The undecideds will eventually decide, which will probably improve Biden’s polling lead. Trump will continue to cheat and looks to suppress the vote, which will have some success.

If the election were decided by popular vote and no significant shenanigans were involved, this election would already be over. Unfortunately, it takes more than that to knock out a Republican president.