As the clock runs out on the provincial election campaign, the BC Liberals are asking some constituents to cast their votes – for the Green Party.

Clark was in Surrey trading high-fives with Green Party supporters, encouraging them to vote for party leader Jane Sterk and making it clear that the enemy of her enemy is her friend.

“People make their choices based on their best judgement, based on their own principles, based on their own values," BC Liberal Leader Christy Clark said Sunday.

“People know what my values are…I think people know what [Green Party Leader] Ms. Sterk’s are, I don’t think most people have any idea what Adrian Dix’s values are,” she said. “We all know he wants to be premier. Most of us wonder why.”

The Liberals took out a full-page ad in a Victoria newspaper Friday urging left-leaning voters to vote Green instead of for the NDP – potentially splitting the vote, allowing the Liberals to breeze up the middle.

But the NDP fired back with their own ad Sunday, warning voters to “stick together” or face another four years with the Liberals at the helm.

“It’s clearly a game at this point, after 12 years, for the Liberal Party. They’re all about playing games, all about doing what it takes for them to have another four years in power,” Dix said. “Does anyone really think that Premier Clark supports the ideas of the Green Party? No, she just wants to be premier.”

But when pressed on an apparent flip-flop on the issue – Dix previously called it “disrespectful” when the Liberals urged Conservative supporters not to split the vote – the NDP Leader said it’s a different situation.

“I’m saying let’s stick together and vote NDP. I’m the leader of the NDP and the NDP is advocating that people vote NDP in this election. There’s nothing new about that,” he said.

Former NDP Premier Mike Harcourt took that message a little further Friday, calling outright for people not to split the vote.

“By voting Green in an election where every seat counts you may be electing another BC Liberal government,” he said.

Though the economy is on the top of most voters’ lists when it comes to this election, green issues aren’t far behind and could tip the scales, UBC political scientist Richard Johnston said.

“These are policy-motivated voters who do have, I think, potentially a number of seats in their hands,” he said. “They might win one or two, but I think the critical thing is: will they deprive the NDP of seats elsewhere by virtue of splitting the non-Liberal, non-Conservative vote?”

In the middle of the vote-splitting clash sits Sterk, who isn’t losing sleep over the Liberal leader endorsing her.

“They presented our policy on pipelines and tankers clearly. It’s unfortunate that they didn’t promote our huge investments in renewable energy,” she said. “But I guess that didn’t serve their purpose.”

British Columbians head to the polls Tuesday from 8 a.m. to 8 p.m. while nearly 270,000 have already voted in advance polls as of Friday.

With a report from CTV British Columbia’s Penny Daflos