House Speaker Nancy Pelosi is politically intelligent by holding a formal impeachment vote on Trump's chamber floor, according to Brit Hume.
However, the investigation he is planning is "peculiar" and, unlike previous proceedings against former presidents like Richard Nixon, Hume said on Tuesday "Tucker Carlson Tonight".
"Frankly I can't think of a good reason, from his point of view, because he would have held a vote," he said.
A full vote, said senior political analyst Fox News, would expose vulnerable democratic lawmakers – especially those in districts won by President Trump in 2016 – to a vote that could hurt them politically.
PELOSI ANNOUNCES THE HOUSE WILL NOT VOTE NOW ON WHEN TO START THE STORAGE REQUEST
"In this way, he manages to get all the fruits of this particular investigation he has announced in progress, and none of the negative aspects," he said.
"They are conducting a very unusual survey."
Turning to Nixon, Hume said that the Chamber started a balanced and fair process during this investigation.
The Republican minority was able to engage in the trial and call witnesses, and the proceedings were not largely held behind closed doors, he added. "None of this is happening here."
However, he said that while the Democrats' investigations continued, national polls show increasing support for impeachment, as well as impeachment and removal.
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Late Tuesday, representative Pelosi, D-California, announced after the meeting with the Democratic caucus in the House that there would be no vote – at least for now – on the start of formal impeachment proceedings against Trump.
"We don't need to have a vote, so we won't have a vote right now," Pelosi said.
"We are not here to call bluff – we are here to find the truth, to support the US Constitution. This is not a game for us. This is deadly serious."
Gregg King of Fox News contributed to this report.