The thing is, if a candidate seems interesting, you should teach her to look up their website and read their full agenda. If they've held positions before, also to google them to find out what they've actually said and done in the past, and to think carefully about what kinds of implications those deeds may have had. You most certainly shouldn't base your election choices on paid ads - or, really, any kind of information only from a single outlet.

That's also the general recipe for avoiding echo chambers: don't be lazy, and go a little out of your way to find things out.