Story highlights The formal process of scrubbing candidates' records and backgrounds is complete, according to sources familiar with the process

While Wednesday was likely the day, according to several sources, all stressed it was not definite

(CNN) President Barack Obama's team has finished the critical work of vetting potential candidates for the Supreme Court nomination, and a decision by the President could be announced as early as Wednesday, several sources tell CNN.

The formal process of scrubbing candidates' records and backgrounds is complete, according to sources familiar with the process.

"The groundwork has been methodical and is done," one of the sources told CNN on Tuesday.

That leaves only Obama to make a final determination of whom to select to replace Antonin Scalia, who died last month.

While Wednesday was likely the day, according to several sources, all stressed it was not definite.

Read More