Who won the election in Lincoln-Douglas Debates?

Douglas. But Lincoln had gotten Douglas staked out to some positions perceived as pro-slavery in their debates, and this hurt Douglas in 1860 when they opposed each other for president. Douglas was hurt worse in 1860 by the divisions in the Democratic Party, though, which saw southern Democrats nominate and run John C. Breckenridge, and a breakaway faction nominate and run John Bell. So the Democrats divided their vote three ways in 1860, and Lincoln "won" with less than 40% of the popular vote.