(Radio Iowa) — Six Democratic presidential candidates will debate tonight (Tuesday) in Des Moines. The debate will be broadcast on C-N-N, in partnership with The Des Moines Register. It’ll begin at 8 p.m. and last for two hours. In the hours leading up to the event, Bernie Sanders and Elizabeth Warren quibbled publicly about a C-N-N report of a private conversation they had more than a year ago.

Actress and singer Mandy Moore joined Pete Buttigieg in Ames last night to make her pitch for his candidacy. The black mayor of Iowa’s most racially diverse city in endorsing Pete Buttigieg for president. The endorsement by Waterloo Mayor Quentin Hart gives the former South Bend, Indiana, mayor a boost as he struggles to attract voters of color. Hart told The Associated Press he was supporting Buttigieg in part for what he called the Democrat’s effort to address racial economic disparity in South Bend. The Buttigieg campaign hopes Hart’s endorsement will help not only inoculate Buttigieg from the stubborn notion he cannot win black support but also potentially resonate beyond majority-white Iowa, as Buttigieg winds his way through the Democratic primary campaign.

Andrew Yang, who did not qualify for tonight’s debate, celebrated his 45th birthday last night after speaking to a crowd of 700 at Drake University. Joe Biden and Iowa Attorney General Tom Miller visited with campaign volunteers in Des Moines last night. Miller endorsed Biden Monday morning. And late Monday afternoon President Trump’s campaign announced there will be a Trump re-election rally in Des Moines on January 30th.

Iowa Republicans AND Democrats will hold their precinct caucuses in 20 days.