Conkling was corrupt,and powerful. The southern votes weren't all that high,at all,but having New York as his stronghold pulled him through for the nomination greatly,Blaine though popular,was easily attacked against Conkling,and Conklings "harshness" pulled Southern votes through (Think Trump OTL). Conkling had enough funds,and overreaching power to win some states heavily (the most populous) as I continue these will become more fleshed out,it is my first timeline after all.