National elections

Volunteer Erick Zehr carries campaign signs outside a venue as snow falls before an event with Democratic presidential candidate Sen. Elizabeth Warren, D-Mass., Friday, Jan. 17, 2020, in Newton, Iowa. (AP Photo/Patrick Semansky)

From left, Labour Members of Parliament, Rebecca Long-Bailey, Jess Phillips, Emily Thornberry, Lisa Nandy and Keir Starmer stand on the stage, during the first Labour leadership hustings at the ACC Liverpool, in Liverpool, England, Saturday, Jan. 18, 2020. (Danny Lawson/PA via AP)

In this January 11, 2020 photo former congressman, US Senate and Presidential candidate Beto O'Rourke speaks before a crowd of campaign volunteers for Eliz Markowitz in Katy, Texas. Markowitz is an educator running for district 148 of the Texas state house. O'Rourke and other national Democrats have endorsed Markowitz, her race is being viewed as a bellwether for national politics in 2020. (AP Photo/ John L. Mone)

FILE - In this Nov. 1, 2019, file photo, Iowa Democratic Party Chair Troy Price speaks during the Iowa Democratic Party's Liberty and Justice Celebration in Des Moines, Iowa. Two of the first three states to vote in the Democratic presidential race will use new mobile apps to gather results from thousands of caucus sites. The technology is intended to make counting easier, but that raises concerns of hacking or glitches. (AP Photo/Nati Harnik, File)

Democratic presidential candidate Michael Bloomberg speaks to supporters Wednesday, Jan. 15, 2020, in New York. (AP Photo/Frank Franklin II)

Hillary Clinton participates in the Hulu "Hillary" panel during the Winter 2020 Television Critics Association Press Tour, on Friday, Jan. 17, 2020, in Pasadena, Calif. (Photo by Richard Shotwell/Invision/AP)

FILE- In this Nov. 21, 2019, file photo, Democratic presidential candidate former technology executive Andrew Yang, leans on his wife with his wife Evelyn, as they join in at a Fair Fight phone bank at Ebenezer Baptist Church in Atlanta. The wife of Democratic presidential candidate Andrew Yang says she was sexually assaulted by her OB-GYN while she was pregnant with the couple's first child. (Bob Andres/Atlanta Journal-Constitution via AP)

Democratic National Committee Chairman Tom Perez speaks to student organizers receiving training to work on the presidential campaign on Thursday, Jan. 16, 2019, in Madison, Wis. Perez told the students they will be the key to defeating President Donald Trump this year. (AP Photo by Scott Bauer)

House Sergeant at Arms Paul Irving and Clerk of the House Cheryl Johnson carry the articles of impeachment against President Donald Trump to Secretary of the Senate Julie Adams on Capitol Hill in Washington, Wednesday, Jan. 15, 2020. Following are impeachment managers, House Judiciary Committee Chairman, Rep. Jerrold Nadler, D-N.Y., House Intelligence Committee Chairman Adam Schiff, D-Calif., Rep. Hakeem Jeffries, D-N.Y., Rep. Sylvia Garcia, D-Texas, Rep. Val Demings, D-Fla., Rep. Zoe Lofgren, D-Calif., and Rep. Jason Crow, D-Colo. (AP Photo/Manuel Balce Ceneta) , Wednesday, Jan. 15, 2020. (AP Photo/Manuel Balce Ceneta)

Democratic presidential candidate Michael Bloomberg speaks during his presidential campaign in Austin, Texas, Saturday, Jan. 11, 2020. (Lola Gomez/Austin American-Statesman via AP)