David Eby attacked John Rustad over conspiracy theories. Rustad took Eby to task over tax increases and affordability. Those were just a couple of the themes popping up in a three way leaders debate on 980-CKNW radio Wednesday morning. Green leader Sonia Furstenau defended her party’s decision to keep a consumer-based carbon tax as a means of fighting climate change. A televised debate will be held Oct. 8. B.C. voters go to the polls Oct. 19.