The average donation recorded by the RandPaul.com site hovered around $60 during the first few weeks, although the site did not list the amount of each contribution, just the total number of donors and the total amount. That means that Rand Paul will be able to go back to many of these supporters during the primary season. Indeed, some of them have already given multiple times.

Beginning on April 7 and continuing through Sunday, The Upshot was able to collect records of more than 28,000 online contributors to Rand Paul. That data, which represents at least $2.6 million, doesn’t include all of the contributions that the campaign has received (the campaign declined to release a total). In particular, it doesn’t include high-dollar fund-raising events where donors typically provide a check. The Upshot was able to match more than 25,000 records with census data to obtain population figures.

The data doesn’t include all of the money that Rand Paul has raised online. The campaign briefly stopped showing donor information, and there were at least two periods of several hours each when The Upshot was unable to collect information.

Most of the individuals displayed on the site won’t have their names recorded in F.E.C. filings, which require only disclosure of donors who give $200 or more in aggregate (the next filing deadline for most candidates is July 15).

Not all of the information displayed on RandPaul.com appears to reflect actual donors, suggesting that, despite moderating donor names, the site is showing the names of a few people who fill out donation forms even if they don’t give money (or the transaction doesn’t go through). On the first day, the site displayed the names of “Fake Fakerton of Fake Town, R.I.” and “Hillary Clinton of Saint Clair Shores, Mich.,” among others.