Advanced political campaigning software raises various ethical issues.

A canvasser that is operating under the direction of a reactive script will become a sort of terminal for the campaign's computer to talk with voters, but will still appear to be a supporter communicating on per own behalf.

As for the personalization of messages based on data collections, I see the collection of the data as a bigger issue than that use of it. The specific problem of campaign message personalization is that the campaign can say special to certain selected voters, things which the general public might find odious but would never see.

The campaign's use of this nonfree software treats the campaign unjustly, in my view. (The candidates and their campaign managers have probably never thought about this issue.) Worse, asking campaign volunteers such as canvassers to use the nonfree software is an injustice to all of them.