ALOR GAJAH, Oct 30 (Bernama) -- Winnability and a thorough assessment on the ground were the key considerations behind Barisan Nasional (BN) and Perikatan Nasional (PN) agreeing to allocate two additional seats to MCA for the 16th Melaka state election, Melaka BN chairman Datuk Seri Dr Ab Rauf Yusoh said.