It is very, very surprising that FVP lost BA Province. I never saw that coming.
I knew something was wrong when they delayed publishing the official results. At about 11:57 or so, Alak came out on live TV and kept talking, talking, talking -- It became quite clear to me that they were buying time. My jaw fell to the floor when I saw Macri leading...
With 97% of the voting counted, this link http://www.lanacion.com.ar/1839396-elecciones-2015-resultados-en-vivo-por-provincia-municipio-y-comuna says that Scioli won BA Province roughly 37% to Macri's 33%.
Macri was up two points overall (the whole country) about midnight or so, but I watched it change the other way over the next couple of hours.
Massa said last night that he would support whoever won BA Province...