Showing Preference to Partner's First Suit

When your partner opens the bidding with one suit and rebids a second suit (e.g., 1♥ – 1NT – 2♦), they are describing a two-suited hand. A core rule of bidding is: If you have equal length in partner's two suits, you must show preference to their first suit.

Why showing preference works

Bidding rules dictate that the first suit bid is always longer than, or equal to, the second suit bid. If partner bids 1♥ then 2♦, they have at least 5 Hearts and 4 Diamonds.

If you hold two Hearts and two Diamonds, you must bid 2♥. A 5-2 fit is mathematically superior to a 4-2 fit. Bidding 2♥ is not a raise showing extra points; it is a "false preference" showing equal length and a weak hand.

A worked example: The False Preference

Your Hand (Responder):

♠ 10 8 4 3

♥ 7 5

♦ K 9

♣ J 8 6 4 2

(4 HCP)

The Auction:

• Partner: 1♥
• You: 1NT
• Partner: 2♦
• You: 2♥ (Preference)

Caption: You have 4 points, 2 Hearts, and 2 Diamonds. Partner promised 5 Hearts and 4 Diamonds. You must bid 2♥ to play in the 7-card fit rather than passing and playing in the 6-card Diamond fit. This does not show extra points; partner knows you are weak.

Four common mistakes

• Passing the second suit because you are weak, abandoning the 5-2 major fit.
• Opener thinking responder's 2-level preference bid shows extra points and bidding again.
• Showing preference with a 3-card fit in the second suit and a 1-card fit in the first (play the 4-3 fit!).
• Jumping to 3 of the first suit with a weak hand.

When the rule does not apply

If partner's sequence explicitly shows 5-5 shape (e.g., jumping in the second suit or using a specific convention), you can pass the second suit if it keeps the auction lower and you have equal length.

Key takeaways

• The first suit bid is always longer or equal to the second.
• With equal length, go back to the first suit.
• This is a "preference," not a raise.
• Keeps the partnership in the largest possible fit.