Try in "The Letters of Theodore Roosevelt" edited by Elting E. Morrison, John M. Blum, Alfred D. Chandler Jr., Sylvia Rice, et.al. Vol III, pages 193-194. There is a letter from TR to Archbishop Ireland which touches upon your topic. The footnote for the letter explains how the patronage changed.
--- In firstname.lastname@example.org, Jonathan Brodo <jonbrodo17@...> wrote:
> Hello Everyone,
> I am writing a paper for "Southern Politics" class regarding the 1904
> Presidential Election and how TR swung Missouri from the "solid south". I
> am having trouble so far collecting information besides a couple lines here
> and there that he won Missouri. Any help would be much appreciated!
> Thank you,
> Jonathan Brodo_._,___