Liberal upper house MP Simon Ramsay has been put under pressure to resign from state politics by Opposition Leader Matthew Guy after being caught driving almost four times over the legal alcohol limit.

The Western Victoria MP has already been preselected for another four-year term in State Parliament but Mr Guy wants him to consider resigning following the state election after having been caught drink-driving at the weekend.

Liberal MP for Western Victoria Simon Ramsay was pulled over by police with a blood-alcohol reading of 0.19 per cent. Credit:Rob Gunstone

Mr Ramsay faces serious drink-driving penalties.

He blew a reading of .19 per cent shortly after being intercepted by police in Barwon Heads late on Saturday night.