She didn't suspend the election, she delayed it by 4 weeks. Her opponent in fact argued for that to happen.

And at the time they did have a new cluster of locally-transmitted cases.

https://www.bbc.com/news/world-asia-53796434

Err - what? The whole reason the election has been delayed is because of community transmission in Auckland. Additionally all parties have agreed to the suspension. In fact it was the opposition who called for the intitial suspension.

The major opposition party and most of the minor parties wanted the election to be suspended. It wasn't electioneering, it was literally just making sure thousands of people didn't go to the polls during a pandemic.

Of course I will have zero surprise if the right wingers now start pointing back to it as if it was a bad thing, because blind opposition to everything is just what they do. But at the time everyone was calling for it.