Ritchie started the season with Swindon Town and scored nine goals for the Robins before securing a January transfer to League One rivals Bournemouth.
He has netted once in 11 appearances for the Cherries and is hoping to pip his former club to promotion to the Championship.
Eddie Howe's side currently sit third in the League One table and are behind second-placed Swindon on goal difference having played a game more.
Coventry striker Clarke had been in contention for the prize after showing excellent form for two clubs in the division this season.
Clarke scored 11 goals in 15 appearances during a loan spell at Scunthorpe United before netting 10 times in 16 games for Coventry after joining in January.
Notts County midfielder Judge has enjoyed an impressive season at Meadow Lane which has seen him linked with a move to a higher division.
Hartlepool United prospect Luke James was named the division's Apprentice of the Year after scoring twice in 19 League One appearances so far this season.
The 18-year-old attacker has featured 39 times in the first team in total and beat George Willis of Sheffield United and Colchester United's Drey Wright to the accolade.