Vice President Mike Pence and Speaker of the House Nancy Pelosi, D-Calif., read the final certification of Electoral College votes cast in November's presidential election during a joint session of Congress after working through the night, at the Capitol in Washington, Thursday, Jan. 7, 2021. (AP Photo/J. Scott Applewhite, Pool)

Lawmakers were resolved to complete the Electoral College tally in a display to the country, and the world, of the nation’s enduring commitment to uphold the will of the voters and the peaceful transfer of power. They pushed through the night with tensions high and the nation’s capital on alert.

People shelter in the House gallery as protesters try to break into the House Chamber at the U.S. Capitol on Wednesday, Jan. 6, 2021, in Washington. (AP Photo / Andrew Harnik)

A violent mob loyal to President Donald Trump stormed the U.S. Capitol on Wednesday and forced lawmakers into hiding, in a stunning attempt to overturn America’s presidential election.

President Donald Trump speaks during a campaign rally for Sen. Kelly Loeffler, R-Ga., and David Perdue, at Dalton Regional Airport, Monday, Jan. 4, 2021, in Dalton, Ga. (AP Photo / Evan Vucci)

Republicans mounting an unprecedented challenge to Joe Biden’s election win are setting up a congressional showdown on Wednesday that threatens to divide their party and the country for years to come. 

Rep. Marjorie Taylor Greene, R-Ga., wears a “Trump Won” face mask as she arrives on the floor of the House to take her oath of office on opening day of the 117th Congress at the U.S. Capitol in Washington, Sunday, Jan. 3, 2021. (Erin Scott / Pool via AP)

With mounting desperation, President Donald Trump called on Republican lawmakers Monday to reverse his election loss to Joe Biden when Congress convenes for a joint session this week to confirm the Electoral College vote.

President Donald Trump boards Air Force One at Palm Beach International Airport, Thursday, Dec. 31, 2020, in West Palm Beach, Fla. (AP Photo / Patrick Semansky)

Plus: A look at the legal questions surrounding the call on ‘Chicago Tonight’

President Donald Trump pressured Georgia’s Republican secretary of state to “find” enough votes to overturn Joe Biden’s win in the state’s presidential election, repeatedly citing disproven claims of fraud, according to a recording of the conversation. 

Sen. Ted Cruz, R-Texas, greets a crowd before he speaks at a campaign rally for Sen. Kelly Loeffler, R-Ga., on Saturday, Jan. 2, 2021, in Cumming, Ga. (AP Photo / Brynn Anderson)

A growing number of Republican lawmakers are joining President Donald Trump’s extraordinary effort to overturn the election, pledging to reject the results when Congress meets next week to count the Electoral College votes. 

President-elect Joe Biden speaks after the Electoral College formally elected him as president, Monday, Dec. 14, 2020, at The Queen theater in Wilmington, Del. (AP Photo / Patrick Semansky)

Plus: ‘Chicago Tonight’ on the Electoral College process

The Electoral College decisively confirmed Joe Biden on Monday as the nation’s next president, ratifying his November victory in an authoritative state-by-state repudiation of President Donald Trump’s refusal to concede he had lost.

The state’s Electoral College met Monday, Dec. 14, 2020 to cast votes for president in the 2020 election. (WTTW News)

Illinois’ 20 members of the Electoral College played their part Monday in getting former Vice President Joe Biden to the White House, despite President Donald Trump’s continued attempts to overturn last month’s election results.

Kathy Kratt of Orlando, Fla., displays her Trump flags as she and other protesters demonstrate their support for President Donald Trump at the Supreme Court in Washington, Friday, Dec. 11, 2020. (AP Photo / J. Scott Applewhite)

The Supreme Court has rejected a lawsuit backed by President Trump to overturn Joe Biden’s election victory, ending a desperate attempt to get legal issues rejected by state and federal judges before the nation’s highest court.

President Donald Trump listens during a ceremony to present the Presidential Medal of Freedom to former football coach Lou Holtz, in the Oval Office of the White House, Thursday, Dec. 3, 2020, in Washington. (AP Photo / Evan Vucci)

President Donald Trump fruitlessly pressed Georgia’s governor on Saturday to call a special legislative session aimed at overturning the presidential election results in that state.

Election workers, right, verify ballots as recount observers, left, watch during a Milwaukee hand recount of presidential votes at the Wisconsin Center, Friday, Nov. 20, 2020, in Milwaukee. (AP Photo / Nam Y. Huh)

Wisconsin finished its recount of votes cast in this month’s presidential election on Sunday, with only minuscule changes in the results that saw Democrat Joe Biden defeat Republican Donald Trump in the battleground state.

In this Nov. 4, 2020, file photo, an election worker holds a ballot as vote counting in the general election continues at State Farm Arena in Atlanta.  (AP Photo / Brynn Anderson, File)

Since Election Day, President Donald Trump and his allies have sought to expose voter fraud that simply does not exist in overwhelmingly Black population centers like Detroit, Philadelphia and Atlanta.

Election workers, right, verify ballots as recount observers, left, watch during a Milwaukee hand recount of presidential votes at the Wisconsin Center, Friday, Nov. 20, 2020, in Milwaukee. (AP Photo / Nam Y. Huh)

Election officials in Wisconsin’s largest county accused observers for President Donald Trump on Saturday of seeking to obstruct a recount of the presidential results.

In this Nov. 10, 2020, file photo President-elect Joe Biden smiles as he speaks at The Queen Theater in Wilmington, Del. (AP Photo / Carolyn Kaster, File)

Joe Biden will be sworn in as the oldest president in the nation’s history, displacing Ronald Reagan, who left the White House in 1989 when he was 77 years and 349 days old.

President-elect Joe Biden, accompanied by Vice President-elect Kamala Harris, speaks at The Queen theater, Thursday, Nov. 19, 2020, in Wilmington, Del. (AP Photo / Andrew Harnik)

The win by Joe Biden pads his Electoral College margin of victory over President Donald Trump. Biden now has 306 electoral votes to Trump's 232.

President Donald Trump speaks in the Rose Garden of the White House on Friday, Nov. 13, 2020. (WTTW News via CNN)

President Donald Trump has aggressively promoted misinformation and disinformation questioning the results of the election, which he lost. Former Illinois U.S. Rep. Joe Walsh, a fierce Trump critic, weighs in.