A look at the 2020 candidates appearing on night two of the Democratic debate

The second round of Democratic candidates will debate on Thursday in Miami. Here are some quick facts about them.

There will be over 153 years of political experience on the debate stage.

The candidates include:

• 1 Vice President: Biden
• 4 Senators: Harris, Sanders, Bennet, Gillibrand
• 1 Congressman: Swalwell
• 1 Mayor: Buttigieg
• 1 entrepreneur: Yang
• 1 author & activist: Williamson

The candidates range in age from 37 to 77 years old.

• Oldest candidate: Sen. Bernie Sanders, 77 years old
• Second oldest candidate: Former Vice President Joe Biden, 76 years old
• Youngest candidate: Mayor Pete Buttigieg, 37 years old
• Second youngest candidate: Rep. Eric Swalwell, 38 years old

They also differ in terms of experience.

• Most political experience: Former VP Joe Biden, 46 years
• Neither best-selling author and activist Marianne Williamson nor entrepreneur Andrew Yang have ever held elected office.
• Mayor Pete Buttigieg will be the lone candidate on the stage tonight who has served in the United States military.

Some candidates share a common background.

• 7 candidates attended law school: Biden, Bennet, Buttigieg, Harris, Gillibrand, Swalwell and Yang.
• Sen. Sanders, Biden, Gillibrand and Bennet have all served over 10 years in the United States Senate.
• Sen. Sanders and Sen. Harris serve together on the U.S. Senate Budget Committee.
• Sen. Harris and Sen. Bennet serve together on the U.S. Senate Intelligence Committee.
• Sen. Gillibrand and Sen. Bennet serve together on the U.S. Senate Agriculture Committee.

One notable friendship:

• Hickenlooper and Bennet have been friends for more than 15 years. They worked together when Hickenlooper served as Denver mayor, and Bennet eventually became the city's superintendent of public schools.

The candidates debating on Thursday are:

Former VP Joe Biden

Political Experience:

• Vice President of the United States: 8 years
• United States Senator, Delaware: 36 years
• New Castle County Council: 2 years

Personal quick facts:

• 76 years old
• Born in Scranton, Pennsylvania
• University of Delaware graduate
• Syracuse University law school
• Gold Medal of Freedom (2009)
• Presidential Medal of Freedom (2017)
• Spouse: Jill Biden, an English teacher
• 4 children
• Biden's first wife, Neilia, and their daughter, Naomi, died in a car accident in 1972, and his son, Beau, died in 2015

Sen. Michael Bennet

Political Experience:

• United States Senate, Colorado: 10 years
• Former chair of the Democratic Senatorial Campaign Committee
• Served as Superintendent of Denver Public Schools