if the ÖVP has any decency at all they'll coalition with the SPÖ rather than the FPÖ
edit: i should clarify that this is a reasonable thing to expect, since the current government is that same coalition, though led by the SPÖ
edit2: apparently "Kurz is believed to prefer a coalition with the far-right FPÖ, but he said on Sunday evening that he would consider all options" so forget him I guess