Trzaskowski without the support of the left in the second round? Valid candidate declaration

Rafał Trzaskowski announced that as president he would sign the bill on reducing the wellness contribution, vetoed by Andrzej Duda. Will the left, who asked the president to veto, repeat that the simplification in the contribution would destruct the barely surviving wellness care, behave consistently and refuse to support the PO vice-president in a second round, if necessary.