If I were you I'd order sooner rather than later. Especially if you've made up your mind you want to buy, there is only risk of it costing more down the road....If anything changes then at least you would be grandfathered in.
Haven't seen it mentioned here but the liberal platform also included extending the incentive to used EVs, at 10% up to max of $2,000. Of course not everything in the platform will get implemented, but that should be fairly easy for NDP to support as it makes EVs more accessible for those on lower incomes. For current owners, it would probably give a boost to resale values.