. S . ▁sen ators ▁are ▁Democr ats ▁D ian ne ▁Fe in stein ▁and ▁Kam ala ▁Harris . ▁ ▁List ▁of ▁sen ators ▁ ▁| - ▁style =" height : 2 em " ▁! ▁ 1 ▁| ▁align = left ▁| ▁John ▁C . ▁Fr ém ont ▁| ▁ ▁| ▁Democratic ▁| ▁now rap ▁| ▁September ▁ 9 , ▁ 1 8 5 0 ▁– M arch ▁ 3 , ▁ 1 8 5 1 ▁| ▁Elect ed ▁December ▁ 2 0 , ▁ 1 8 4 9 . ▁| ▁ 1 ▁| ▁ ▁| ▁row span = 4 ▁| ▁ 1 ▁| ▁row span = 4 ▁| ▁Elect ed ▁December ▁ 2 0 , ▁ 1 8 4 9 . ▁| ▁row span = 4 ▁now rap ▁| ▁September ▁ 9 , ▁ 1 8 5 0 ▁– M arch ▁ 2 , ▁ 1 8 5 5 ▁| ▁row span = 4 ▁ ▁| ▁Democratic ▁| ▁row span = 4 ▁align = right ▁| ▁William ▁M . ▁G win ▁! ▁row span = 1 1 ▁| ▁ 1 ▁ ▁| - ▁style =" height : 2 em " ▁| ▁col span = 3 ▁| ▁V ac ant ▁| ▁now rap ▁| ▁March ▁ 4 , ▁ 1 8 5 1 ▁– J anu ary ▁ 2 9 , ▁ 1 8 5 2 ▁| ▁Legisl ature ▁failed ▁to ▁elect . ▁| ▁row span = 5 ▁| ▁ 2 ▁| ▁row span = 2 ▁▁ ▁| - ▁style =" height :