NEWARK, N.J. (AP) — The sentencing of two former aides to New Jersey Gov. Chris Christie in the George Washington Bridge lane-closing case will close a chapter on a scandal that has negatively affected the Republican’s presidential hopes and popularity at home.

It likely won’t provide final answers to questions including when and how much Christie knew about the scheme. He wasn’t charged in the case.

Bridget Kelly and Bill Baroni could face about three to four years in prison when they’re sentenced Wednesday in Newark.

Both have asked for probation.

They testified at their trial last fall that they were misled by former Port Authority of New York and New Jersey official David Wildstein, who ultimately pleaded guilty and admitted he concocted the scheme.