How did president lincoln’s political stand on slavery differ from his personal stand from the war?

President Lincoln personally wanted to prevent the spread but not abolish it. He eventually passed the Emancipation Proclamation to completely abolish slavery.

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