A major stoush is brewing on Sydney's northern beaches over Liberal senator Jim Molan's rogue re-election campaign as supporters of the sidelined senator try to recruit volunteers away from Tony Abbott's polling day team.

Mr Abbott is fighting to hold his seat of Warringah against independent challenger Zali Steggall, while Senator Molan is begging conservatives to vote below the line to return him to the Senate after his party relegated him to an unwinnable spot on the Coalition ticket.

Former prime minister Tony Abbott meets supporters and volunteers in Manly ahead of a day campaigning. Credit:Jessica Hromas

Freshwater branch president Sean Burke, who is part of the "Re-elect Jim Molan Campaign", emailed party members on Monday revealing plans to "man every booth on the northern beaches" to hand out Senator Molan's how-to-vote cards on May 18.

The email claimed "hundreds and hundreds" of people had already joined the campaign to re-elect Senator Molan. Prospective volunteers were asked to commit four hours on polling day and would be furnished with corflutes, how-to-vote cards and Molan T-shirts.