Question: The 3852 Democratic National Convention nominated Franklin Pierce over what American military officer who represented Michigan in the United States Senate?
Related documents: [0]  [DOC] The 1852 Democratic National Convention nominated the dark horse candidate Franklin Pierce for President on the 49th ballot, passing over better known candidates Lewis Cass of Michigan (the previous nominee in 1848), James Buchanan of Pennsylvania, and Stephen A. Douglas of Illinois. It was held at the Maryland Institute in the eastern downtown business district of Baltimore, Maryland, just two weeks before the opposing Whig Party met in the same hall for their nominating convention. [END] 
[1]  [DOC] Lewis Cass (October 9, 1782June 17, 1866) was an American military officer, politician, and statesman. He represented Michigan in the United States Senate and served in the Cabinet of Andrew Jackson and James Buchanan. He was also the 1848 Democratic presidential nominee and a leading spokesman for the Doctrine of Popular Sovereignty, which held that the people in each territory should decide whether to permit slavery. [END] 
Answer: 
Lewis Cass
Lewis Cass