Australian supporters of Ukraine's Opposition party are holding a protest vigil in Canberra to support new presidential elections.

They are protesting against what they see as Russia's efforts to influence the presidential vote.

About 30 protesters dressed in the bright orange of the Opposition party camped outside Canberra's Russian embassy overnight, and today their numbers are growing.

They plan to stay there for another 24 hours, protesting Russia's involvement in the Ukrainian election process.

With Ukraine's Supreme Court annulling last month's presidential election, Australian supporters of Opposition candidate Viktor Yushchenko are now urging Russian President Vladimir Putin to stay out out of any new vote, which is due before the end of the month.

There is a small police presence keeping an eye on the protest, which has remained peaceful but vocal.