Left: Special Prosecutor Kenneth Starr. Photo: David Hume Kennerly/Getty Images. Right: Special Counsel Robert Mueller. Photo: Alex Wong/Getty Images

Special counsel Robert Mueller is one year in to his investigation of President Trump's presidential campaign and potential meddling by the Russian government, only a blip compared to the length of other major political investigations, FiveThirtyEight reports.

The big picture: One year later, we're still unsure of the scope of what Mueller does or doesn't know, and as noted by FiveThirtyEight, predicting the outcome of an investigation so early on hasn't proven to be useful in the past.

Watergate

One year after Archibald Cox was appointed special prosecutor, he was fired by Nixon.

  • President Trump hasn't fired Mueller, but that doesn't mean he hasn't wanted or threatened to. In January, news broke that he ordered the removal of Mueller, but ultimately backed down. White House lawyer Ty Cobb said in March that Trump "is not considering or discussing" firing Mueller.
Iran-Contra

In Lawrence Walsh's first year as independent counsel, "he secured only two guilty pleas," per FiveThirtyEight.

Whitewater

The month that Kenneth Starr's investigation started in August 1994, 52% of Americans believed his investigation was unimportant, FiveThirtyEight reports.

Go deeper

SurveyMonkey poll: Trump improves, but not enough

Trump and Biden during the final debate. Photo: Xinhua/Liu Jie via Getty Images

President Trump's final debate performance exceeded Americans' expectations, but it wasn't enough to shift the dynamics that left him trailing Joe Biden across most measures, according to a new Axios-SurveyMonkey poll.

What they're saying: "Liar" was the word used most by debate watchers to describe Trump's performance, followed by "lies," "strong," "presidential" and "childish." "Presidential" was the word used most to describe Biden's performance, followed by "liar," "weak," "expected" and "honest."

Hunter Biden saga dominates online debate

Data: NewsWhip; Table: Axios Visuals

The mainstream media turned away. But online, President Trump's charges about Hunter Biden were by far the dominant storyline about the final presidential debate, according to exclusive NewsWhip data provided to Axios.

  • Coverage of business dealings by Joe Biden's son — and pre-debate allegations by one of his former business associates, Tony Bobulinski — garnered more than twice as much online activity (likes, comments, shares) as the runner-up.