President Trump’s anticipated Senate trial will test swing-state centrists. Still, the White House and conservative allies are optimistic that there will be unity among Republicans in a vote to acquit Trump.

Trump’s probable impeachment will be followed by a January trial for two articles of impeachment: abuse of power and obstruction of Congress. Acquittal is all but certain, with 20 Republican votes needed to remove him from office. Trump defenders say they are confident centrist Republicans have clear lines emerging to justify their votes.