18:57
One thing to keep in mind is that even though there's one slot now, if another were to open up within a reasonable period, SE might call up the second-place finisher instead of running a new election. That's happened fairly often on SO. It almost happened here, when jmac got hired by SE, but the results that far down the ballot were "noncommittal" enough that we had a second election instead of doing that.
So even though we're only electing one person, you should cast votes for as many candidates as you support (up to 3), in an order of your choosing. It could matter later.
(I'm not aware of any specific plans on the part of any of our moderators. This is just contingency planning, which could either be someone stepping down or the site continuing to grow and needing yet another mod.)