The phrase "second petition" refers to a formal request or appeal made after an initial one has already been made. It is a way of seeking further action or consideration from someone in authority. Full definition
Elizabeth May: Mr. Speaker, the second petition is from residents of Thunder Bay, Sudbury, and Winnipeg, calling on the Government of Canada to abandon its promotional stance toward the northern gateway project and ensure it has a full and neutral review, bearing in mind that so far the proponent has not dealt with the subject... (elizabethmaymp.ca)
Elizabeth May: Mr. Speaker, the second petition is from residents of Montreal, Oshawa, Surrey and Gabriola Island who urge the government to decline to approve the northern gateway project. (elizabethmaymp.ca)
Elizabeth May: Mr. Speaker, the second petition speaks to the question of the need to have a thorough review before allowing risky pipelines and tankers in British Columbia. (elizabethmaymp.ca)