What is a preemptive raise?
A preemptive raise is when you support partner's suit with very few points — sometimes none — but lots of trumps. The point of the bid is not to suggest a strong hand. It is to make the auction loud and difficult for the opponents, while letting partner know your side has a big fit.
Always show support
With 4+ card support for partner's suit, it is almost always a good idea to let partner know — even with very few or no points.
There are times in bridge when points should drive your bid. And there are times when points should be ignored. This is one of those “ignore the points” moments. The big trump fit is the message.
Jump raises today are preemptive
This is a matter of partnership agreement, style, and what you feel comfortable with. You can do well in bridge by playing like this, or if you prefer, you will do fine by leaving it out.
Modern bidding treats jump raises as preemptive. So:
- 1 spade by partner, you jump to 3 spades → 4 spades and a weakish hand.
- 1 spade by partner, you jump to 4 spades → 5+ spades, more distributional hand. Doesn't say much about points, typically 9 or less.
These bids are not showing 15+ points. They are showing trump length and the desire to jam the auction quickly.
When preemptive raises work best
Preemptive raises are at their best when you are not vulnerable. The cost of going down a couple of tricks, even doubled, is much smaller, so the gamble is much more attractive. But don't discount your chances of making — big trump fits can be magical.
Vulnerable, the cost of going down –2 doubled is steep. Pick your spots more carefully when vulnerable.
Why competitive bidding wins so much
There are three big upsides to bidding aggressively when you have a big trump fit:
- You might just make the contract. Shape and trumps can produce many more tricks than the raw point count suggests. A 10-card fit with a singleton on the side can make a major even when combined points are well below 25.
- You get in the opponents' way. Once you have raised to 3 or 4 of partner's suit, opponents have to start guessing at the 4 or 5 level. They cannot use their full bidding system to find their best contract.
- You force opponents to take risks. Whatever they do — bid on or pass — they are guessing. Some of the time they will guess wrong, and that swing comes to your side.
Common preemptive raise mistakes
- Refusing to raise because “I only have 2 points.” If you have 4+ trumps, raise.
- Jumping preemptively when vulnerable with a flat hand. Distribution is your friend — flat hands rarely make good preempts.
- Raising on 3 trumps. Preemptive jumps need 4+ trumps. With 3, a simple raise is usually enough.
- Not discussing with partner first. A bid that partner is not expecting is probably not going to go well.
A practical checklist
Before making a preemptive jump raise, ask:
- Do I have 4+ card support? If so, probably do something!
- Is my hand weak (typically under 6 points)?
- Am I non-vulnerable, or at least not in the worst spot to be doubled?
- Do I have some shape (a shortage or extra length) that will help play?
If yes to most of these, jump with confidence.
Final takeaway
Preemptive raises are one of the most practical weapons in modern bridge. The pattern is simple: 4+ card trump support, weak hand, ideally non-vulnerable — jump. Sometimes you'll go down a couple of tricks. Often you'll make. And every time you do it, you make life harder for opponents who probably had the better hand.