In a serious blow to Canadian Prime Minister Justin Trudeau a second member of his Cabinet resigned on Monday, saying she had lost confidence in how the government had dealt with an escalating political scandal.

The departure of recently appointed Treasury Board President Jane Philpott, who was in overall charge of government spending, deprives Trudeau of another powerful female Cabinet minister just months ahead of an election that polls show he could lose.

Philpott expressed unhappiness about the government's response to allegations that officials inappropriately pressured former Justice Minister Jody Wilson-Raybould last year to help major construction company SNC-Lavalin Group Inc avoid a corruption trial.