Complex sentence: Mccormick was elected as a Republican to the Sixty-seventh Congress (March 4,1921-March 3,1923), but was unsuccessful in his reelection bid in 1922 to the Sixty-eighth Congress.
Split into simpler sentences: Mccormick was elected as a Republican to the Sixty-seventh Congress (March 4,1921-March 3,1923). He was an unsuccessful candidate for reelection in 1922 to the Sixty-eighth Congress.