Politics1 lists the following as possibilities at this time:
Steve King (R) - Congressman
Kim Reynolds (R) - Lt. Governor, Ex-State Sen. & Ex-County Treasurer
Chaz Allen (D) - State Sen., Ex-Newton Mayor & Welding Contractor
Liz Mathis (D) - State Sen. & Ex-TV News Anchor
Andy McGuire (D) - State Democratic Chair, Physician, Health Care Executive & '06 Lt.Gov. Candidate
Janet Petersen (D) - State Sen. & Ex-State Rep.
Not sure who the woman with the funny name would be. am sure this list will expand shortly.
Anesa Kajtazovich? If she were running a decade ago she would look promising, but Iowa is trending away from Democrats quickly. I think the winner of the Republican primary (probably Reynolds) will win the general.