Sen. Elizabeth Warren. Photo: Chip Somodevilla/Getty Images

Sen. Elizabeth Warren became the most prominent Democratic candidate to launch an exploratory committee for president on Monday, joining former HUD Secretary Julián Castro and several other Democrats who have already announced their intent to challenge President Trump in 2020.

The big picture: Presidential campaigns weren't always this lengthy, with Bill Clinton announcing his bid just 13 months before the 1992 election, the New York Times notes. But since then, it's become somewhat standard for major candidates to declare early — sometimes even a full two years before the election.

  • 2016: Jeb Bush announced he would "actively explore" a run 23 months before the 2016 election, while Ted Cruz officially announced 20 months before. Democratic candidate Hillary Clinton officially announced her run in April 2015, and Donald Trump kicked off his campaign in June.
  • 2012: Republican candidates waited to challenge President Obama until 20 months before the election, with former Minnesota Gov. Tim Pawlenty declaring in March 2011. He was followed by Republican nominee Mitt Romney, who formed an exploratory committee in April.
  • 2008: Iowa Gov. Tom Vilsack announced his bid a full two years ahead of time — during the week of the 2006 midterms. John McCain did the same later that November, while Democratic contenders Barack Obama and Hillary Clinton both announced in January 2007.
  • 2004: Democratic nominee John Kerry was the first to announce he would challenge President George W. Bush, launching an exploratory committee 23 months before the election.
  • 2000: Democratic Sen. Paul Wellstone really jumped the gun, forming an exploratory committee 31 months before the 2000 election in April 1998. Vice President Al Gore did the same on New Year's Day in 1999, followed by Bush two months later.

Go deeper: The Democrats' 2020 crowd jumps the gun

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Updated 19 mins ago - Politics & Policy

Coronavirus dashboard

Illustration: Aïda Amer/Axios

  1. Politics: Chris Christie: Wear a mask "or you may regret it — as I did" — Senate Democrats block vote on McConnell's targeted relief bill.
  2. Business: New state unemployment filings fall.
  3. Economy: Why the stimulus delay isn't a crisis (yet).
  4. Health: FDA approves Gilead's remdesivir as a coronavirus treatment How the pandemic might endMany U.S. deaths were avoidable.
  5. Education: Boston and Chicago send students back home for online learning.
  6. World: Spain and France exceed 1 million cases.

FBI: Russian hacking group stole data after targeting local governments

FBI Headquarters. Photo: Mark Wilson/Getty Images

Energetic Bear, a Russian state-sponsored hacking group, has stolen data from two servers after targeting state and federal government networks in the U.S. since at least September, the FBI and Cybersecurity and Infrastructure Security Agency said on Thursday.

Driving the news: Director of National Intelligence John Ratcliffe announced Wednesday that Iran and Russia had obtained voter registration information that could be used to undermine confidence in the U.S. election system.

FDA approves Gilead's remdesivir as a coronavirus treatment

A production line of Remdesivir. Photo: Fadel Dawood/picture alliance via Getty Images

Gilead Sciences on Thursday received approval from the Food and Drug Administration for remdesivir, an antiviral treatment that has shown modest results against treating COVID-19.

Why it matters: It's the first and only fully FDA-approved drug in the U.S. for treating the coronavirus.