[EM] Debian election results using IRV

[James Gilmour]

Rob wrote
> As I alluded to earlier, I decided to do some analysis of the last
> Debian Project Leader election that occurred last month.  It was
> officially tallied using Condorcet, and as such, Martin Michlmayr won in
> a very close race between him, Bdale Garbee (the incumbent), and Branden
> Robinson.

How can this be described as a Condorcet election when voters could mark tied
preferences?
James