There have been at least 4 first-hand witnesses who have testified in the impeachment hearing

[pnwmom]

And a fifth who was at the table in the Ukrainian restaurant, but is not yet reported to have testified.

Three 1st hand witnesses have testified about the July 25th telephone call:
Colonel Vindman
Jennifer Williams
Timothy Morrison

https://www.nytimes.com/2019/11/16/us/politics/impeachment-trump.html?smid=nytcore-ios-share

Mr. Morrison’s account already prompted Mr. Sondland to revise his own private testimony, but it also underscored the importance both to Mr. Trump and to Democrats of his public appearance next week, as one of the few cooperating witnesses who directly spoke to Mr. Trump about his interest in Ukraine.
Both Ms. Williams and Mr. Morrison listened in on a July 25 phone call between Mr. Trump and Mr. Zelensky.

Snip

The president’s allies are also likely to use Mr. Morrison’s closed-door interview to try to undercut Lt. Col. Alexander S. Vindman, the White House’s top Ukraine expert, when he testifies publicly next week about his deep alarm over the July 25 call and other matters.

And there are two 1st hand witnesses to phone call between Sondland and Trump, but only one has testified so far
David Holmes
Suriya Jayanti -- has not yet testified

https://www.politico.com/news/2019/11/14/trump-sondland-ukraine-phone-call-070913

The second diplomatic staffer also at the table was Suriya Jayanti, a foreign service officer based in Kyiv. A person briefed on what Jayanti overheard spoke to AP on condition of anonymity to discuss a sensitive matter currently under investigation.

snip

The staffer Taylor testified about is David Holmes, the political counselor at the embassy in Kyiv, according to an official familiar with the matter who spoke on condition of anonymity.

Holmes is scheduled to testify Friday before House investigators in a closed session.

[dem4decades]

1. Like facts matter to the Republicans

[Poiuyt]

2. Now that they're getting first hand accounts, the republicans want to hear from the whistleblower.

They'll do whatever they can to reign confusion and distraction onto the hearings because they can't argue the facts.

[Talitha]

5. THIS !!!!!

[erronis]

3. I'm waiting for pure McCarthy techniques. "Prove that you're not a member of the communist party"

Guilty until proven innocent by some Cohn/Nixon/trump appointed jury.

"And tell us about your wife/husband/friends. Tell us about your sex life (or lack of.)"

Fortunately Nunes and Jackitoff aren't very good at subtle innuendo.

[asiliveandbreathe]

4. Oh, Timmyboy tried to disparage Vindman...but our Dems challenged him at

at every turn...he also tried to disparage Fiona Hill...timmyboy said he was resigning...I look forward to timmyboys open testimony Tuesday..I would also hope they call Gen. Kellogg, who Williams reported to and he was on the July 25th call..

This is how he, timmyboy, ended his opening statement..

" Serving at the White House in this time of unprecedented global change has been the opportunity of a lifetime. I am proud of what I have been able in some small way to help the Trump administration to accomplish". COUGH COUGH..

from article above..

The president’s allies are also likely to use Mr. Morrison’s closed-door interview to try to undercut Lt. Col. Alexander S. Vindman, the White House’s top Ukraine expert, when he testifies publicly next week about his deep alarm over the July 25 call and other matters.

I have read the transcripts of both Williams and Morrison..like night and day...took me most of yesterday afternoon..and this morning to get through both....I was seething reading his disgusting approach to Vindman..timmyboy is a former staffer for rep. Kyl...

[crickets]

7. Good background info to know about Tim Morrison.

I hadn't bothered to read his statement or paid much attention. Thanks for the heads-up, & mention of Kellogg & Kyl.

For what it's worth, I think Vindman holds his own just fine, and it sounds like Fiona Hill will have no trouble taking Morrison out at the knees. He may end up deeply regretting any 'shading' of facts.

[struggle4progress]

6. And now for the official Republican response:

Neener! Neener! Neener! You can't make me hear anything anybody says! Neener! Neener! Neener!