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Expand chart
Reproduced from a Pew Research Center report; Chart: Axios Visuals

The youngest Americans — millennials and Generation Z — are set to exercise their political muscle in 2020, making up 37% of the electorate, according to a new study by Pew Research.

Why it matters: Younger generations are by far more racially and ethnically diverse and are more likely to be Democrats. But baby boomers remain the generation with the largest share of the voting-eligible population — though barely — and older generations have historically been more likely to turn out and vote.

  • In 2016, for example, boomers and other older generations accounted for 43% of eligible voters, but cast 49% of the ballots.

The big picture: For the first time, millennials will make up a smaller share of the electorate than they did in the last presidential election, even as the generation's numbers continue to grow due to immigration.

  • Yes, but: Generation Z is set to make up more than 10% of the 2020 electorate, surpassing the elderly Silent Generation for the first time. These youngest Americans have continued and deepened many of the political trends favored by millennials, and they are expected to be almost half non-white.

Go deeper:

Go deeper

World leaders react to "new dawn in America" under Biden administration

President Biden reacts delivers his inaugural address on the West Front of the U.S. Capitol on Wednesday. Photo: Alex Wong/Getty Images

World leaders have pledged to work with President Biden on issues including the COVID-19 pandemic and climate change, with many praising his move to begin the formal process for the U.S. to rejoin the Paris Climate Agreement.

The big picture: Several leaders noted the swift shift from former President Trump's "America First" policy to Biden's action to re-engage with the world and rebuild alliances.

Updated 5 hours ago - Politics & Policy

In photos: The Biden and Harris inauguration

President Biden and first lady Jill Biden watch a fireworks show on the National Mall from the Truman Balcony at the White House on Wednesday night. Photo: Chip Somodevilla/Getty Images

President Biden signed his first executive orders into law from the Oval Office on Wednesday evening after walking in a brief inaugural parade to the White House with first lady Jill Biden and members of their family. He was inaugurated with Vice President Kamala Harris at the U.S. Capitol on Wednesday morning.

Why it matters: Many of Biden's day one actions immediately reverse key Trump administration policies, including rejoining the Paris Agreement and the World Health Organization, launching a racial equity initiative and reversing the Muslim travel ban.

Republicans pledge to set aside differences and work with Biden

President Biden speaks to Sen. Mitch McConnell after being sworn in at the West Front of the U.S. Capitol on Wednesday. Photo: Erin Schaff-Pool/Getty Images

Several Republicans praised President Biden's calls for unity during his inaugural address on Wednesday and pledged to work together for the benefit of the American people.

Why it matters: The Democrats only have a slim majority in the Senate and Biden will likely need to work with the GOP to pass his legislative agenda.