With Democrats in control of the White House and Congress, Republicans face profound questions about what the party stands for without Donald Trump in charge.
Amy Coney Barrett has described abortion as "always immoral". The Republican-dominated Senate is planning to confirm her and the Democrats are powerless to stop it.
After a tumultuous decade, the percentage of voters who identify as Republican or Democrat has remained stable, but there are big changes inside the numbers.
Donald Trump and congressional party leaders made no progress over resolving a federal shutdown that has left workers unpaid and sites closed.