Jonathan Pedneault has announced that he is stepping down as co-leader of the Green Party after failing to secure a seat in the House of Commons on his second attempt. 

"While I remain proud of the program the party built and the values we brought forward during this campaign, I recognize that we were not able to break through in a way that could shift the course of our country — and that is a responsibility I must carry," he said in a letter posted online. 

"Twice now, I have failed to convince …