Which candidate in the presidential election of 1912benefitted most from the split in the rebulican party

Woodrow Wilson, a Democrat, benefitted greatly from Teddy Roosevelt splitting the Republican vote.

Wilson would go on to defeat Roosevelt, Taft, and Eugene Debs (the Socialist candidate) to be elected President.

Many in the Republican party held this loss against Roosevelt, prompting him to withdraw from public life for a spell.

the answer to your question is:

strong-mayor system

abraham lincoln, according to anyone who was connected with agriculture, represented the worst of northern politicians. shortly after lincoln was elected, south carolina seceded from the union. they along with other southern states, retained their anger. in a way, it was their own fault: the democrats were split in the south. some wanted slavery to be extended in other states that were about to join the union and some didn't want it badly enough. lincoln had a solid backing from his party: the republicans were united in not wanting slavery to be expanded.