Former Minnesota Lt. Gov. Tina Smith (D) was sworn in on Wednesday to fill the Senate seat vacated by former Sen. Al FrankenAlan (Al) Stuart FrankenMinnesota GOP Senate candidate compared Michelle Obama to a chimp in Facebook post Former campaign aide to New Jersey governor says she was sexually assaulted by his ex-staffer Prosecutor drops some charges against Harvey Weinstein MORE (D).

Vice President Pence administered the oath to Smith from the Senate floor, with former Vice President Walter Mondale, Sen. Amy KlobucharAmy Jean KlobucharIs there difference between good and bad online election targeting? Election Countdown: Minnesota Dems worry Ellison allegations could cost them key race | Dems struggle to mobilize Latino voters | Takeaways from Tennessee Senate debate | Poll puts Cruz up 9 in Texas Clusters of polio-like illness in the US not a cause for panic MORE (D-Minn.) and Senate Democratic leadership looking on from the chamber.

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Pence and Smith took part in a mock swearing-in from the old Senate chamber.

The Senate also swore in Sen. Doug Jones (D-Ala.), who won last month’s special election to fill Attorney General Jeff SessionsJefferson (Jeff) Beauregard SessionsFBI investigated whether McCabe leaked info about Flynn and Trump to media Ex-Senate Intel staffer pleads guilty to lying to feds over contacts with journalists House Judiciary chairman threatens to subpoena Rosenstein MORE’s old seat.

“I’d like to extend a particular welcome to our two new senators who were just sworn in,” Senate Majority Leader Mitch McConnellAddison (Mitch) Mitchell McConnellJuan Williams: Trump’s policies on race are more important than his rhetoric It’s Mitch McConnell’s Washington – and we’re just living in it Trump makes new overtures to Democrats MORE (R-Ky.) said later from the Senate floor.

Smith was appointed to the Minnesota seat last month after Franken said he would resign following several allegations of sexual harassment and groping.

Franken announced during a defiant Dec. 7 floor speech that he would step down after pressure grew for him to resign over the accusations. He formally submitted his letter to Democratic Minnesota Gov. Mark Dayton on Tuesday.

“I am grateful to Minnesotans for giving me the chance to serve our state and our nation, and I am proud to have worked on their behalf,” Franken wrote in the resignation letter.

Franken’s resignation sparks a special election set for 2018 for the final two years of his Senate term.

Smith, who some observers had speculated would be a caretaker, had said she plans to run in the 2018 election.

A second election will take place in 2020 for a full six-year term.

Dayton announced that he was selecting Smith last month, marking the first time Minnesota has been represented by two female senators.

Smith, who served as Minnesota’s lieutenant governor for roughly three years, brings the total number of female senators in the Senate up to 22 — a record for the upper chamber.

Four states — Minnesota, California, New Hampshire and Washington — now have two female senators.