University of Michigan political scientist Nicholas Valentino told Reuters that he did not expect to see much more fluctuation in the numbers unless Republican leaders begin to break ranks and support Trump’s impeachment. ¶¶”People aren’t constitutional scholars,” Valentino told Reuters. “They trust their elected officials from their party to know the rules of politics. And when members of their own party say that someone has broken the rules, that’s when public opinion will really begin to change.”