Advanced voting is underway in Nanaimo, B.C., where a provincial byelection has the potential to alter the balance of power in the legislature between the governing New Democrats and the Opposition Liberals.

Advance polls will be open through Sunday and byelection day is Jan. 30.

Six candidates are running to replace former New Democrat Leonard Krog, who stepped down to successfully run for Nanaimo mayor.

The Vancouver Island seat is considered a New Democrat stronghold because the party has taken it 13 of the last 15 provincial elections.

Liberals are battling hard because a victory would give the party 43 seats, tying it with the 43 held by the New Democrat and Green alliance -- Independent Darryl Plecas is currently serving as Speaker.

About 200 people turned out Monday night at the first all-candidates meeting to hear New Democrat Sheila Malcolmson, Liberal Tony Harris and Green candidate Michelle Ney discuss issues focusing on the economy and affordability.