When writing their official biographies, it happens with disturbing regularity that candidates mention their pets by name but neglect to mention their children by name. The first few times I saw this, I was shocked. Now, it's something I specifically look for when helping candidates write their bios.
Many candidates struggle with what role their spouse and children should play on the campaign. The answer is very simple: a flattering one. If they are not going to help or make you look good, don't use them on the campaign.