Sen. Kyrsten Sinema of Arizona.

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Sen. Sinema on Sunday defended her decision to leave the Democratic Party and become an Independent. On CNN's "State of the Union," Sinema expressed a desire to not be "tethered" by partisanship. Sinema's decision won't affect the 51-49 majority that Democrats will enjoy in the upcoming session.

Sen. Kyrsten Sinema of Arizona, who last week created a political maelstrom by announcing her exit from the Democratic Party to become an...

Continue Reading Arizona Sen. Kyrsten Sinema, who left the Democratic Party, says she doesn't want to be 'tethered' by partisanship: 'I want to remove some of that poison from our politics'