At least being a NATO member, if/when they call for aid, they should expect an answer.
It’s already clear that Hungary and possibly Turkey can’t be counted on to help with Russia, and if far right parties win more elections in Europe and if Trump wins in the US (both of which seem probable), it’s unlikely they would actually step up against Russia considering that conservatives generally see them as an ally and not a threat. Russia may well test the limits of Art. 5 if Trump wins