In it, but not of it. TPM DC

Rep. Dean Heller (R-NV) Announces Run to Replace Ensign

Tcyfkbymyusyltx9521l
Newscom

On the Democratic side, Rep. Shelley Berkley (D-NV) is exploring a run and is widely expected to join the fray. Democratic state officials, including Attorney General Catherine Cortez Masto, Secretary of State Ross Miller, and State Treasurer Kate Marshall, are also considered possible candidates.

For a full rundown of the race, read TPM's handy guide.