Limited-entry sweepstakes are great to enter if you're eligible, because they sharply reduce the competition. Here are four new sweepstakes that are only open to a few states each:

Tesoro's Nothing But Net Sweepstakes

Be one of 100 people to win a brand new netbook computer from Tesoro's Nothing But Net Sweepstakes.

Each of the 100 winners will receive a Dell Inspiron Mini v Netbook worth about $300.

Entry into the Nothing But Net Sweepstakes is open to residents of AK, CA, HI, ID, MN, ND, NV, OR, SD, UT, WY and WA aged 18 and above. Enter daily through March 31, 2010.

Return to School Sweepstakes

Kraft's Return to School Sweepstakes is giving away 504 Publix gift cards.

Four grand-prize winners will each receive a $1,000 Publix Super Markets Gift Card while 500 second-prize winners will take home a $100 Publix Super Markets Gift Card.

Entry into the Return to School Sweepstakes is open to residents of FL, GA, AL, TN and SC aged 18 and above. Enter daily through January 31, 2010.

Conoco Phillips Winning Shot Sweepstakes 2010

Enter Conoco's Winning Shots Sweepstakes for your chance to win one of 12 gas cards given away daily.

Each of the 552 winners will receive a $25 ConocoPillips Gift Card.

Entry into the Winning Shot Sweepstakes is open to residents of AR, CA, CO, IA, IL, KS, MO, MN, NE, NM, OK, OR, TX, UT, WA, and WY aged 18 and above. Enter daily through February 15, 2010.

Wise's Win and Save Sweepstakes and Instant Win Game

121 winners will receive snacks or grocery store gift cards from Wise's Win and Save Sweepstakes.

A grand-prize winner will receive a $1,000 Grocery Gift Card, 60 instant winners will receive $100 Grocery Gift Cards, and 60 more instant winners will receive a case of Wise snacks.

Entry into the Win and Save Sweepstakes is open to residents of CT, DE, FL, GA, MA, MD, ME, NH, NJ, NY, NC, PA, RI, SC, TN, VA, VT, and WV aged 14 and above. Enter daily through March 1, 2010.

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Southwest Airlines is giving you the chance to win a trip to see Cirque du Soliel in Las Vegas with their Le Reve Sweepstakes.

The grand-prize winner will receive a weekend trip for two to Las Vegas including a stay in a resort room at Wynn Las Vegas, breakfast in bed, airfare, and a pair of VIP Indulgence tickets to Cirque du Soliel's Le Reve with plush seating, a bottle of Champagne, chocolate covered strawberries and gourmet chocolate truffles.

Note that the winner will have to present a credit card authorized to cover room tax plus $200 a night for incidentals. I believe that this is only a security to cover any damage to the room or extra charges like pay-per-view or long distance phone charges, and that the winner will not have to actually pay those costs. However, the rules are unclear.

Entry into the Le Reve Sweepstakes is open to US residents aged 21 and above. Enter once before January 31, 2010.

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Cheer is giving you the chance to win hundreds of Cheer-themed prizes in their Cheer Instant Win Game and Sweepstakes.

440 instant prizes will be awarded in total, including 271 Cheer T-Shirts, 103 Cheer laundry bags, and 169 free bottles of Cheer detergent.

Entry into Cheer's instant sweepstakes is open to residents of the US and Canada above the age of majority. Enter daily through June 30, 2010.

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These three sweepstakes are ending today. If they haven't closed for entry already, be sure to get your final chances to win:

• New Orleans MTN - Soul of New Orleans Sweepstakes
• Choice Hotels - Win a Trip to Make a Difference Sweepstakes
• OK Magazine - International Emmy Awards Swag Bag Sweepstakes

For more sweepstakes ending soon, check out the expiring sweepstakes page.