Sen.Kyrsten Sinema(I-AZ) said that she wont run for reelection to the Senate.

She said that despite all of those accomplishments, Americans still choose to retreat farther to their partisan corners.

These solutions are considered failures, either because they are too much or not nearly enough.

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Kyrsten SinemaPhoto by Kevin Dietsch/Getty Image

Its all or nothing.

The outcome, less important than beating the other guy.

But she had withheld announcing her plans until now.

Donald Trump and ABC News' Terry Moran

More recently, Sinema has taken a leading role in reaching agreement on a bipartisan border bill.

Rep. Ruben Gallego (D-AZ) is seeking the Democratic nomination for the seat in the Aug. 6 primary.

On the Republican side, Kari Lake and Mark Lamb are among the candidates seeking the nomination.

A message for Arizonans from Senator Kyrsten Sinemapic.twitter.com/1XWFSWgGdh

More to come.