The Democratic and Republican primaries will be held on September 15, 2020. Incumbent Democratic Senator Chris Coons is running for re-election to a second full term.

“We think the Democratic candidate will likely win the U.S. Senate race in Delaware. Democratic Sen. Chris Coons has angered some on the left with a bipartisan voting record that includes supporting confirmation for a number of Trump nominees”. Politico 11/19/19

Incumbent Democratic Senator Dick Durbin, the Senate Minority Whip, is running for reelection to a fifth term.

Republican Mark Curran won the GOP Senate primary on March 17, 2020. Curran defeated four other Republicans in the primary race and will now face an uphill challenge to unseat the No. 2 Democrat in the Senate.

Curran, the former Lake County sheriff, has adopted both Democratic and Republican policy positions, supporting extensions for the Deferred Action for Childhood Arrivals (DACA) program and creating a pathway to citizenship for “Dreamers” while also opposing abortion access and backing President Trump’s border wall. The Hill.

“What I need to do is sell people on the possibility, and I absolutely believe in the possibility that we can take out Dick Durbin,” Curran told the Chicago Sun Times. “And if we can do that, it’ll be the biggest upset in America.”

U.S. Representative Joe Kennedy III is running against Incumbent Ed Markey for the Democratic nomination.

U.S. Senator Ed Markey and Congressman Joe Kennedy have gotten most of the attention in the 2020 Massachusetts Democratic primary. But a third candidate remains in the race for Senate: Shannon Liss-Riordan. A labor attorney from Texas with a degree from Harvard, Liss-Riordan touts her experience representing workers against corporations like Uber, Starbucks, and American Airlines. She sat down with WAMC to talk about why she got into the contentious primary.

WAMC 2/19/20

Incumbent Democratic U.S. Senator Tina Smith is eligible to run for election to a full term.

Fresh off of defeating Republican state Sen. Karin Housley by more than 10 points in 2018, Sen. Tina Smith must again run for her seat in 2020. Smith was appointed after the resignation of Sen. Al Franken, and won election in 2018 to fill out his term. Now she’s running for a new, six-year term. Smith may face former Republican Rep. Jason Lewis, a convserative talk radio host who lost his seat in the Second District to Rep. Angie Craig in 2018.

Minnesota Post.

Democratic Sen. Jeanne Shaheen is running for a third term in 2020. She won 52 percent of the vote in a tough Democratic year in 2014, defeating former Massachusetts Sen. Scott Brown, who had moved north to challenge her.

Politico

Incumbent Democratic Senator Cory Booker is running for a second full term. Booker was previously a candidate for his party’s nomination for President of the United States in 2020. New Jersey election law allowed him to run for both Senate and President simultaneously, but he suspended his presidential campaign on January 13, 2020, and confirmed his intention for reelection to his Senate seat.

Entrepreneur Rik Mehta has become the first Indian-American to win the Republican primary for the Senate seat from the US state of New Jersey. Mehta, a former US Food and Drug Administration (FDA) official, defeated his nearest rival Hirsh Singh, also an Indian-American, in the Republican, also known as the GOP (Grand Old Party), primaries held on July 7 by a margin of approximately 13,743 votes, according to preliminary results.

On March 25, 2019, incumbent Democratic Senator Tom Udall announced that he would retire and not seek reelection. Udall is the only incumbent Democratic senator who is not running for reelection in 2020. Rep. Ben Ray Luján has emerged as the favorite to replace him.

Democratic Sen. Jeff Merkley considered running for president before deciding to seek a third term.

We think the Democratic candidate will likely win the U.S. Senate race in Oregon.

Politico 11/19/19.

Democratic Sen. Jack Reed, up for a fifth term, has earned more than 70 percent of the vote in each of his three previous reelection campaigns. We rate the race for U.S. Senate in Rhode Island as Solid Democratic. Politico 11/19/19.

Incumbent Senator Mark Warner first won election in 2008 getting 65% of the vote over former governor Jim Gilmore.[1] In 2014, during the Tea Party movement, Senator Warner won re-election with 49.1% of the vote defeating former chairman of the Republican National Committee Ed Gillespie by 0.8%.[2] Warner is running for a third term.

Dr. Daniel Gade is a retired U.S. Army lieutenant colonel, professor, and public policy leader running to serve the Commonwealth of Virginia in the U.S. Senate. Gade has served in President George W. Bush’s administration, working on veteran issues and military healthcare, and has since served on several national-level policy councils, including the National Council on Disability and the VA Advisory Committee on Disability Compensation.

Democratic Sen. Mark Warner got a scare from Republican Ed Gillespie six years ago. But the state has moved further away from Republicans since 2014.

Politico 11/19/19.