(CNN) Welcome to the holding pattern.

There will be no votes. There will likely be limited comments of substance. There will be little in the form of tangible movement for much of this week, as senators wait for the FBI to submit to the White House its supplementary background investigation material on President Donald Trump's Supreme Court nominee Brett Kavanaugh.

That hardly means a truce, however. Democrats are already questioning the legitimacy of an FBI review that is limited in scope. Outside groups are renewing their television ad buys to ramp up pressure on wavering senators.

Bottom line: In talking to Republican officials and aides working on this nomination throughout the weekend, their focus remains firmly on three things and nothing else: Where are GOP Sens. Lisa Murkowski of Alaska, Susan Collins of Maine and Jeff Flake of Arizona?

The week will likely be filled with new allegations or new people coming forward, and these aides are keenly aware that the scope of the FBI's work is becoming a hot button issue.

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