The correct answer to this open question is the following.
On May 16, 1868, US President Andrew Jhonson was elated after the US Senate had acquitted him during his impeachment trial. After the vote, 35 senators voted guilty and 19, not guilty on the 11th article on impeachment.
This made President Jhonson to me more confident that 10 days later, on May 26, 1868, the Senate would again favor him And so it was. The votes were identical. 35 senators voted guilty and 19, not guilty on the 2nd article of impeachment.
The reaction of the radical Republicans was one of anger for the decision made in Congress. Let's remember that Radical Republicans always had major differences with President Johnson in different areas, such as the way to order Reconstruction in the southern states.