New England proved to be the center of the strongest abolitionist sentiment in the country, along with areas that were settled from New England, such as upstate New York, Ohio's Western Reserve, and the states of Michigan and Wisconsin. Abolitionists William Lloyd Garrison and Wendell Phillips were New Englanders, and the region was home to anti-slavery politicians John Quincy Adams, Charles Sumner, and John P. Hale. The anti-slavery Republican Party was formed in the 1850s, and all of New England became strongly Republican, including areas that had previously been strongholds for the Whig and Democrat Parties. The region remained Republican until the early 20th century when immigration turned the states of southern New England towards the Democrats.