Comapared to south farms, in the north:

The Northern free states also were proved to produce more crops than the South, even with the North having considerably smaller labor force than the South's slave industry. ... The North's increased crops is most likely due to the recent invention of many farming machines that the South did invent and utilize.

ummm? is that supposed to be a question or a but this is a reason he won re-election

explanation:

"despite progress in the war, lincoln and most political pundits were convinced that he would lose his bid for reelection in 1864. the country was war weary and the democratic party's nominee, george mcclellan, was likely to negotiate a peace treaty with the confederacy if elected." - loc.gov

"i care deeply about campaign finance reforms: - apex