Marlon has been nominated for the PFA League One Fans' Player of the Month award for March.
Pompey's skipper has led by example to move the side closer to achieving their goal of League One promotion.
He is competing with Exeter's Will Aimson, Derby's Eiran Cashin, Charlton's Alfie May and Lincoln duo Jack Moylan and Joe Taylor.
It is further recognition for the midfielder after he was shortlisted for the division's Player of the Season at next weekend's EFL Awards.
Click here to cast your vote for Marlon. The poll closes at 11.59pm on Thursday.
