The liberal party shouldn't be popping any champagne corks, much the opposite. No poll in isolation is worth the paper its printed on but if you did read much into this one you'd note that the primary vote of the ALP and Greens remains unchanged, three percent of "other" voters now support the liberal party.
Lower "other" voters and unchanged government figures would generally mean the playing field is being polarized: "all or nothing" "with us or against us" "left versus right".
That isn't always a bad thing but it normally is, for it to be a good thing you'd hope Abbott's approval rating was quite good and his preferred pm rating was making good inroads from that left behind by his predecessor. Abbots improvement of 1% on approval ratings is pretty useless and on preferred pm "undecided" has dropped by 2 and he and Rudd pick up one each, no inroad whatsoever but a more polarized playing field.
I think polarized playing fields tend to favour incumbents (2004, 1993, 1977) so heading into the actual campaign I expect most of the undecided and others to flow through to the government.
On a different note Abbott's parliamentary strategy is downright idiotic. Rudd might be boring but at least he comes across as organised, intellectual and belonging. Abbott seems jumpy, disingenuous and immature compared to the last three liberal leaders and the prime minister.