The ordinary Pole is defined as what, exactly?
90% of Polish society, the non-elite who do not have a finger in the pie, are not part of the "układ" (in-group, oldboy network), watch the plutocrats get richer as they themselves have to skimp and scramble to make ends meet. The ones who do not have savings accounts, cannot afford private healthcare, do not holiday abroad and at best own a 15-year-old car if at all.
Unlike your optimistic evaluation, average Poles remember the unkept promises, the raising of retirement age, the scandals (gambling, secret tapes, etc.), the veritable collapse of the state health service (appointments 6 months to 1 year away), delayed road-building projects, the use of OFE funds to shore up the budget and local abuses by PO fatcats. Add to that the exhaustion of seeing shifty-eyed Tusk and his PO menagerie on TV for 8 years.
Since about 55% of eligible voters are likely to vote that would be about 49% of the above.mentioned 90% of the nation. The overwhelming majority of them are expected to vote for PiS who are likely to win 38-40% of the vote. Those are the ordinary Poles.