Mandatory jail for meth dealers: WA Libs

All meth dealers will face mandatory jail time under tough new penalties the WA Liberals have promised to introduce if they win the state election.

WA's Liberal government proposes introducing mandatory prison terms for anyone caught dealing even small quantities of methamphetamine if it wins the March state election.

The pledge comes days after the opposition promised life prison sentences for convicted methamphetamine traffickers, targeting wholesalers rather than street dealers.

"Anybody who is dealing in quantities of meth deserves to be behind bars," Police Minister Liza Harvey told reporters on Sunday.