NEW: Sen. Ron JOHNSON told an interviewer this week that he expects his investigation "would certainly help Donald Trump win reelection."

The Biden camp is crying foul. https://www.politico.com/news/2020/08/13/dems-ron-johnson-probe-trump-win-reelection-394987">https://www.politico.com/news/2020...

Johnson framed his investigation in starkly political terms during two radio interviews this week, also said evidence he uncovered "should completely disqualify Biden from president." https://www.politico.com/news/2020/08/13/dems-ron-johnson-probe-trump-win-reelection-394987">https://www.politico.com/news/2020...

ALSO IN THIS STORY:

-Johnson told one interviewer McConnell "sidelined" him at one point in the investigation.

-A source says Johnson has not contacted BRENNAN for a voluntary interview.

-Johnson source says he& #39;s in talks w/ a dozen Ukraine witnesses. https://www.politico.com/news/2020/08/13/dems-ron-johnson-probe-trump-win-reelection-394987">https://www.politico.com/news/2020...

To Democrats, JOHNSON& #39;s comments echoed Kevin McCarthy& #39;s in 2015, when he told Sean Hannity that the House& #39;s Benghazi investigation had succeeded in damaging Hillary Clinton& #39;s political standing. https://www.politico.com/news/2020/08/13/dems-ron-johnson-probe-trump-win-reelection-394987">https://www.politico.com/news/2020...

JOHNSON is increasingly besieged on all sides — accused of amplifying Russian disinfo by Democrats, of being too timid with his subpoena power by Trump allies, eyed warily by some intel officials.

He says Dems and media are trying to destroy him. https://www.politico.com/news/2020/08/13/dems-ron-johnson-probe-trump-win-reelection-394987">https://www.politico.com/news/2020...