Complex sentence: In 1794 he was elected in to the United States Senate to fill the vacancy caused by the resignation of John Taylor, in 1798 he was releected, and served from December 29,1794, until his death.
Split into simpler sentences: In 1794 he was elected in to the United States Senate to fill the vacancy caused by the resignation of John Taylor. In 1798 he was releected, and served from December 29,1794, until his death.