80+% percent of the LDS Church’s members vote republican.
References
http://www.sltrib.com/ci_7133913

War is a complex issue — socially, politically, economically, and religiously. However, members of the Church of Jesus Christ of Latter-day Saints are able to rely on clearly articulated doctrines and principles as they seek to formulate their own stance toward armed conflict in general and toward specific wars in particular.
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…and the Truth Shall Make You Free.
LatterdayConservative.com is dedicated to teaching the principles of freedom and the proper role of government, from an LDS (mormon) perspective, using quotes, talks and articles by Latter-day Saint prophets and other prominent LDS Church members such as Joseph Smith, Brigham Young, John Taylor, Wilford Woodruff, Lorenzo Snow, Joseph F. [...]

I got in a rather heated discussion with a member of my church about Ron Paul, Mitt Romney, & War. One of the reasons she was apprehensive to vote for Ron Paul was a LDS/Christian prophecy that the Gospel of Jesus Christ will be preached to the entire world before the Second [...]