262090
He was elected as a Republican to the United States Senate and served from March 4 , 1861 , to March 4 , 1867 , and was an unsuccessful candidate for reelection to the Senate .
 Republican
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Republican