A White House official says they expect as many as 20 or more Republicans to vote for impeachment in the House of Representatives on Wednesday, though they do not have a firm figure.
Another GOP source close to situation says to expect between 10 and 25 House GOP members to defect from President Trump, and vote for the article of impeachment.
The source notes that it is a big range and a lot of uncertainty as to how the final vote will break down, and Trump advisers are reminding lawmakers how popular Trump remains in the party.
A separate source on the Hill tells CNN that the number will likely be less than 20.
What we know: Rep. Liz Cheney, the third-ranking GOP leader in the House, Rep. Adam Kinzinger and Rep. John Katko announced today that they will vote to impeach Trump.
The House plans to vote on the article of impeachment tomorrow.