The scarceness of Trump’s offices in several of his must-win states, and their unclear focus on his candidacy, cast real doubts on the Republican nominee’s ability to get out the vote. Clinton’s edge in battleground states will allow her campaign to focus on getting her voters to the polls, target those on the fence and find the Democrats in deep-red counties. If Trump’s chances of winning depend upon disaffected rural voters and previously unregistered Republicans, as some have suggested, those voters may need to mobilize and persuade themselves: The campaign simply does not have the organizational scope to reach them.

Clinton’s field offices were also much simpler to find online. Just this week, Trump’s campaign introduced a “States” section on its site with lists of offices — for only six states.3 Before that, it was very difficult to locate Trump offices: We were determined to find them and spent many hours looking. How many would-be Trump volunteers just gave up? Clinton’s site is much more straightforward, directing people to their nearest office with a simple ZIP-code entry tool. Field offices are only as effective as the volunteers they can attract, and supporters need to know where they are — though, too often, they are nowhere to be found in the places Trump will need them the most.