EXPLAINER: What Sinema's switch means for the Senate

FILE- Sen. Kyrsten Sinema, D-Ariz., center, gestures during a news conference at the Capitol in Washington, Wednesday, July 28, 2021, while working on a bipartisan infrastructure bill with, from left, Sen. Rob Portman, R-Ohio, Sen. Joe Manchin, D-W.Va., and Sen. Jeanne Shaheen, D-N.H. Though elected as a Democratic, Sinema announced Friday, Dec. 9, that she has registered as an independent, but she does not plan to caucus with Republicans, ensuring Democrats will retain their narrow majority in the Senate. (AP Photo/J. Scott Applewhite, File)

WASHINGTON (AP) — Arizona Sen. Kyrsten Sinema's switch from Democrat to independent won’t change the balance of power in the Senate. But it could affect her political fortunes back home.

Sinema says she won’t caucus with Senate Republicans, so Democrats will still hold the majority next year. And she is expected to continue casting most of her votes with Democrats while separating herself on certain issues.

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