The actual number of free-state settlers that made it to Kansas was far more modest than the expectations set in the press but the perception was in the public psyche.
When the Kansas Territory’s first governor, Andrew Reeder, called for elections of the Kansas Territorial Legislature on March 30, 1855, pro-slavery Missourians crossed the border in droves and took advantage of a poorly conceived suffrage law that required little to no proof of residency to vote. The government they elected was widely recognized as bogus but Reeder let the election stand and President Franklin Pierce endorsed it. The new government created exceptionally pro-slavery laws, some verging on the absurd. Free-state men revolted by setting up their own shadow government in Topeka claiming that its laws and elected officials would become legitimate once statehood was achieved. This exacerbated further the rift between the two factions and opened the door for the Lecompton government to take legal action against the free-soil men, indeed eventually accusing some of treason.
“If one government was valid, the other was spurious, either morally or legally, as the case might be. If the acts of one were binding upon the citizens, then submission to the authority of the other by, for instance, paying its taxes or serving in its militia would constitute sedition, or even treason.” (i)
Polarization of the factions increased.
(i) David M. Potter and Don E. Fehrenbacher, The Impending Crisis, 1848-1861, (New York: Harper and Row Publishers, Inc., 1976), 206.