I didn't think they were pretending to vote, I thought (and still think) many of them were partaking in the Irish tradition of maintaining a voting registration in your Mammy's when you haven't lived there for years.
There was a lot of talk on Twitter pre-election about registering yourself "back home" if you had an address you could use, regardless of where you lived.
I was concerned that in the event of a close vote for Yes, there might be questions raised about how many people who were no longer resident had been able to register when they shouldn't have, and what the implications would be.
I was also worried about what the numbers of non-tweeting No voters, who had similarly maintained registration not entirely truthfully, might be, and whether that might swing it.
I wondered was I wrong to have honestly deregistered when I left the country, because I could have travelled if I'd realised it was now OK to live outside Ireland and vote in referendums.
It was polling day. It was tense. The message was that turnout in Dublin wasn't high enough.
But yeah, I found it a bit nauseating.