Top coalition MPs insist they're not worried about Pauline Hanson's skyrocketing popularity as analysts say the populist party is on the cusp of a political breakthrough.
Ahead of the One Nation leader's closely watched address to the National Press Club, her surging political fortunes have sent the opposition and the government scrambling to respond.
Nationals Leader Matt Canavan, whose Senate seat could be at risk from One Nation if recent opinion polls are borne out at the next election, said Senator Hanson's rise presented a "massive opportunity".
