Which Game to Bid?

Partner opens 1♦. You respond 1♥. Partner rebids 3♦. You are playing Matchpoints.

What should you rebid? Would rebidding spades show or ask for a stopper?

Scroll down for the full hand, a solution/suggestion and/or explanation

Gino's Suggestion

Bid an optimistic 3NT. Playing Matchpoints, often take the risk in 3NT. Hope for a 'good thing' to happen in spades!

Note that rebidding spades - a third suit bid - would conventionally SHOW a spade stopper, asking for a club stopper.