US History

These battleground seats were selected by examining the results of the 2016 presidential election in the state, whether the incumbent was seeking re-election, and whether the incumbent was serving his or her first term in the Senate.

Information on states held by a party opposite the winning 2016 presidential candidate A list of race ratings Information on historical wave elections Contents [hide]  1 Partisan breakdown 2 Seats up for election 3 Battleground elections 3.1 Seats that changed party hands in 2014 4 Outside ratings 5 Fundraising by candidate 6 Fundraising by party 6.1 Democratic Senatorial Campaign Committee 6.2 National Republican Senatorial Committee 7 Filed candidates by political party 8 Incumbents not seeking re-election in 2020 8.1 Historical comparison 9 Presidential election data 10 Special elections 10.1 Historical special election data 10.1.1 Special elections, 2013-2020 10.1.2 Special elections, 1986-2012 11 Annual Congressional Competitiveness Report, 2020 12 Congressional approval rating 13 Noteworthy events 13.1 Supreme Court vacancy, 2020 14 Important dates and deadlines 15 Ballot access requirements 16 Wave elections 17 See also 18 External links 19 Footnotes

Information on 2020's battleground races

The current and historical partisan balance of the U.S. Senate

South Carolina Lindsey Graham

Arizona Martha McSally

Colorado Cory Gardner

Alabama Doug Jones

Georgia David Perdue

Maine Susan Collins

It is incontrovertible that America is a multiracial society, from the founding father Alexander Hamilton (the son of a mixed-race woman from the British West Indies) to Essie Mae Washington-Williams, 78, a retired schoolteacher, who, the late Senator Strom Thurmond's family acknowledged last month, is his daughter. And for decades there have been questions about the possible mixed-race ancestry of Ida Stover, Dwight D. Eisenhower's mother.

One is Jacqueline Kennedy Onassis, whose blood lines, according to the historian Mario de Valdes y Cocom, go back to the van Salees, a Muslim family of Afro-Dutch origin prominent in Manhattan in the early 1600's. If any branch of your family has been in America since the 17th or 18th centuries, Dr. Berlin said, ''it's highly likely you will find an African and an American Indian.''

he found that Mrs. Phillips and his wife, Rita, had white ancestors who were not slave masters, including a woman who started a family with John Kecatan, an African slave freed in 1666.

''There were communities in 17th- and 18th-century America where blacks and whites, both free, of equal rank and shared experiences, were working together, living together, drinking and partying together, and inevitably sleeping together.''

An added challenge is that racial identity can mutate from free black to white in just a few generations.

Mr. Heinegg is familiar with racial prejudice. He and his wife, who met as members of the Brooklyn outpost of the Congress on Racial Equality, left the country in 1969, disgusted by what they saw as a lack of progress. They raised their three daughters in Tanzania, Liberia and Saudi Arabia.