The biggest open question related to the 2020 Democratic field is likely to be answered next week. Former Vice President Joe Biden is expected to announce he is running for president.
This will be Biden's third try for the presidency. His 1988 run was over by the autumn of 1987, falling victim to a scandal around plagiarism. In 2008, he placed fifth in the Iowa caucuses and immediately withdrew from the race. He would go on to be Barack Obama's running mate that year, serving two terms as vice president. He passed on a 2016 run after delaying his decision by several months following the death of his son, Beau.