I think it depends on what you want the outcome to be here. If we are talking about preventing this specific Act passing, then that is possible, but if you are wanting the entire system of the New Poor Law to be waved away, that is much harder.
The problem is, essentially, that a change needs to happen. For both financial and ideological reasons any widespread system of outdoor relief [i.e. money paid to workers to supplement their wages] was unpopular in early c19th Britain. Workhouses, too, were on their way. York, for example, is already setting them up parish-by-parish in the late 1770s onward. A lot of the provisions of the New Poor Law, whilst reforming, were generally ''accepted'' by the powers that be as required.
There is a major problem of poverty with the swelling industrial revolution at the time, and the taxes levied on middle and upper class ratepayers were beginning to bite. But you've also got to remember that this is a system that was, and post1834 was still intended, to be administered by those who paid the tax in each location. So the chances for reform from either political side is slim.
Finally, whether you think Chadwick a monster or not [he really wasn't] this is the orthodoxy about poverty at the time. There are only two options, really, and they've already got one that isn't working [outdoor relief]. Thus indoor relief [the workhouse and more strict rules about funding generally] is the only real option available. All involved, pretty much, agreed that the poor needed to be supported and all involved, pretty much, also agreed that this needed to be administered locally and not by central government. If you thought otherwise you were a radical outlier, either right or left, and probably nowhere near the reins of power.
So, really, its a very difficult change to bring about if you want the reforms of the New Poor Law to be avoided. A political POD would be a temporary stop - the ideas were society-wide and so you'd need a much more involved and deeper POD that related to the social, cultural, and economic elements that brought about the New Poor Law.