By the Numbers: Look ahead at politics in 2013

(CNN) -- Two-thousand-thirteen promises to be an interesting political year -- with two governors races that will be closely watched, the very real possibility of another special Senate election in Massachusetts, a possible debate in Washington over immigration reform as the political clout of Latinos continues to grow, and a planned push by Democrats for gun control measures.

By the numbers, here's a look ahead at politics in 2013:

315.1 million - The population of the United States on January 1, 2013, as estimated by the Census Bureau.

2 - Number of times the date of the presidential inauguration has been on the same day as the the Rev. Martin Luther King Jr. holiday: January 21, 2013, for Barack Obama's second inauguration, and Bill Clinton's second inauguration, on January 20, 1997.

90 - Number of new members of the 113th Congress, who will start work in January.

29 - Age of the youngest new representative, Patrick Murphy, a Democrat from the 18th District of Florida.

239 - Days off members of the U.S. House of Representatives will receive in 2013.

85 - Percentage of Democrats and independents who lean towards the Democratic Party in a new CNN/ORC International poll who say they'd be very or somewhat likely to support Hillary Clinton if she runs for the Democratic nomination in 2016.

11.2 million - Undocumented immigrants in the United States who could be affected if the government reforms its immigration laws in 2013.

49,972,000 - Latinos in the United States in 2011, according to the Census Bureau.

More than 900 - Weapons planned to be exempted from Sen. Dianne Feinstein's assault weapons ban legislation for 2013.

2 - Gubernatorial races in 2013 (New Jersey and Virginia).

1 - Special election likely in Massachusetts, to replace John Kerry in the Senate, if he is confirmed as the new secretary of state.

15 - States named "states to watch" by the Institute on Taxation and Economic Policy for upcoming tax legislation overhauls in 2013.

53 - Percentage of respondents in an ABC News/Washington Post poll who said they were hopeful about the year 2013.

44 - Percentage of those in the same poll who said they felt fearful.