Educated at Bowdoin College, Andrew was a radical abolitionist of slavery from an early age, engaged in the legal defense of fugitive slaves against owners seeking their return. He provided legal support to John Brown after his 1859 raid on Harpers Ferry, Virginia, raising his profile and propelling him to the Massachusetts governor's chair. Andrew was a persistent voice criticizing 16th President Abraham Lincoln's conduct of the war, and pressing him to end slavery. By the end of the war, his politics had moderated, and he came to support Lincoln's former Vice President, a War Democrat, now 17th President Andrew Johnson's Reconstruction agenda.