Wolves moved two points clear in Sky Bet League One on Saturday as they won 3-0 at Walsall and Leyton Orient were held by Notts County.
Port Vale strikers Ben Williamson and Tom Pope scored in the space of five second-half minutes to secure a 2-1 win over Carlisle.
Second-half strikes from Darius Charles and John Mousinho saw Stevenage earn a 3-1 victory over fellow strugglers Tranmere.
Joe Garner struck twice as Preston maintained their bid for promotion with a 3-1 victory at 10-man Oldham.
Bristol City boosted their chances of League One survival with a crucial 3-2 win at fellow strugglers Shrewsbury.