U.S. Rep. Peter Welch speaks at a press conference in Barre on March 16, 2020, along with Scott administration officials about the impact of the coronavirus. Welch on Monday announced his candidacy for U.S. Senate. File photo by Glenn Russell/VTDigger

Updated at 5:21 p.m.

The long-suspected rumors are true: Vermontโ€™s U.S. Rep. Peter Welch is launching his campaign for the U.S. Senate.

The Democrat announced early Monday that after 14 years in the 435-member House of Representatives, he wants to jump to the more senior chamber, vying for the seat soon to be vacated by U.S. Sen. Patrick Leahy, a Democrat.

If he prevails, Welch, 74, would represent Vermont in the 100-member Senate alongside U.S. Sen. Bernie Sanders, an independent.

In an interview with VTDigger Monday afternoon, Welch said he was surprised by Leahyโ€™s decision to retire and had hoped the eight-term senator would seek another term. But when Leahy made his call โ€” and in doing so revealed Vermontโ€™s first open congressional seat in over a decade โ€” Welch said he had his own decision to make.

From there, Welch said the question of whether to run โ€œactually was pretty straightforward.โ€ If Republicans successfully flip the Senate, he said, big-ticket Democratic policy priorities such as climate change mitigation, tax reform, voting rights legislation and abortion access are off the table.

โ€œAll of these things are very much in the balance as to whether or not we have a 50-50 Senate or maintain a progressive Democratic voice in the U.S. Senate for Vermont,โ€ he said.

He said he believes democracy would face peril should Republicans take back the Senate, and said he is โ€œabsolutelyโ€ afraid of the potential ramifications. With Republican-dominated legislatures across the country passing state-level voting restrictions, Welch said, โ€œwe are on a knifeโ€™s edgeโ€ as a country.

โ€œThe other thing that was searing for me, and I think it was for the entire country, was what happened on Jan. 6,โ€ Welch said. โ€œI was in the Capitol and I was there when the mob was breaking the doors down. I was there when the shot was fired. And that was horrifying. But what was most sad for me, and worrisome for me, was when 147 of my colleagues later voted to disregard the will of the American people at who they had elected to be the president.โ€

Leahy announced last week that he will retire at the conclusion of his current term in 2023 after nearly 50 years of service, triggering the first open seat in Vermontโ€™s three-member congressional delegation since 2007 โ€” when Welch first assumed his current seat in the House. 

Should he win the Senate seat, Welch would follow in the footsteps of Sanders, who also rose from the House to the Senate when former Sen. Jim Jeffords retired in 2007.

Already on Monday morning, Sanders put his political weight behind Welch, announcing his endorsement of Welchโ€™s Senate run. Pointing to Welchโ€™s 14 years in the House, Sanders said Welch โ€œhas the knowledge and experience to hit the ground runningโ€ in the Senate.

โ€œPeter Welch understands that if we are going to combat the existential threat of climate change, establish universal health care, lower the cost of prescription drugs, create good paying jobs in Vermont and protect American democracy, now is the time to think big, not small,โ€ Sanders said in a statement from his campaign.

Democrats currently hold a razor-thin 50-50 majority in the Senate. Welch stressed in his campaign launch that the result of Vermontโ€™s Senate race โ€œwill determine control of the Senate and with it, what we can accomplish for Vermont families.โ€

โ€œ(E)verything โ€” voting rights, Medicare for All, a Green New Deal, lowering prescription drug costs, reproductive justice, racial and economic justice, everything โ€” gets filibustered and blocked by the Mitch McConnell Republicans in the Senate,โ€ he said in his campaign ad. โ€œTheyโ€™re fighting for failure.โ€

There is even splintering from within the Senateโ€™s Democratic caucus right now, with moderates such as Joe Manchin of West Virginia and Kyrsten Sinema of Arizona sparring with progressives such as Sanders to block social spending supported by other Democrats. Asked how he would navigate such division in and out of his own party, Welch said that โ€œevery single day, youโ€™ve got to be interacting with your colleagues in good faith.โ€

โ€œYes, there’s some folks down there that are determined to fight for failure. And you know, you’re not going to get anywhere with them,โ€ Welch said. โ€œBut that’s my approach. It’s what I did when I served in the Vermont Senate, and it’s what I did as a member of Congress, and it’s what I’m going to continue to do if I’m elected to the Senate.โ€

By launching his Senate campaign, Welch opens the door to the role he now holds: the stateโ€™s at-large representative in the U.S. House. No one has launched an official campaign, but Democratic rising stars have signaled interest, including Senate President Pro Tempore Becca Balint, D-Windham, Lt. Gov. Molly Gray, and Sen. Kesha Ram Hinsdale, D-Chittenden.

In a statement Monday morning, Ram Hinsdale said that, with Welch launching his campaign for the Senate, she โ€œwill be deeply exploring a run for Congress to give Vermonters a fighter in Washington.โ€

From across the aisle, Republican Gov. Phil Scott, who currently holds the title as Americaโ€™s most popular governor, has said he has no desire to go to Washington.

Meanwhile, Balint, Gray and Ram Hinsdale have shown no appetite to challenge Welch in the Democratic primary for the Senate seat. Welch will have to withstand any challenges from within his party in a primary election before moving on to the general election in November 2022.

But the shuffling of Vermontโ€™s political deck offers the state an opportunity to make history: Vermont has never sent a woman to Congress. Two open races in the stateโ€™s three-member congressional delegation could change that.

Open seats in Vermontโ€™s congressional delegation also offer a chance for generational change. Leahy is currently 81 years old, Sanders 80 and Welch 74.

Asked by VTDigger what he makes of the notion that Vermont should elect a younger politician to Leahyโ€™s seat, Welch said, โ€œEvery Vermonter, whether they’re running for public office, or they’re serving in the local selectboard, has to make a decision: How can I help? How can I help heal our country? How can I help save our democracy?

โ€œEverybody’s invited to that and everybody has to make their own individual decision, regardless of who they are, and where they are,โ€ he continued. โ€œI’ve made a decision that’s based on my life circumstances. It’s based on the fact that I’ve been a very effective member of Congress, and it’s also based on the urgency of the moment. … And that is, given my experience, given my success in getting in the hard fights and winning, that I believe I can best serve by being a candidate for U.S. Senate. And I respect the decision that every other Vermonter makes.โ€

Previously VTDigger's statehouse bureau chief.