Paul S. Boyer, et al., eds., The Enduring Vision: A History of the American People, 6th ed. (Boston: Houghton Mifflin Company, 2008), 412.
In December 1857, the referendum called earlier by the constitution convention was held. Boycotted by free-staters, the constitution with slavery passed overwhelmingly. Two weeks later, in the election called by the territorial legislature, the proslavery side abstained and the constitution went down to crushing defeat. Buchanan tried to ignore this second election, but when he attempted to bring Kansas into the Union under the Lecompton constitution, Congress blocked him and forced yet another referendum. This time, Kansans were given the choice between accepted or rejected the entire constitution, with the proviso that rejection would delay statehood. Despite the proviso, Kansans overwhelmingly voted down the constitution.