President Obama is dining Tuesday night with a bipartisan group of female senators, part of an ongoing charm offensive aimed at creating a better working relationship with Congress.

In addition to Sen. Kirsten Gillibrand (D-N.Y.), who confirmed her attendance on Twitter, Sens. Kelly Ayotte (R-N.H.), Susan Collins (R-Maine), Dianne Feinstein (D-Calif.), Mazie Hirono (D-Hawaii), Claire McCaskill (D-Mo.) and Debbie Stabenow (D-Mich.) have confirmed that they plan to attend. Sen. Heidi Heitkamp (D-N.D.) is planning to, but she's also pushing for the Marketplace Fairness Act on the floor.

The dinner will be held in the State Dining Room and is closed to the media.

Gillibrand told ABC News' Diane Sawyer earlier this year that the president had promised to host a dinner with only the 20 female senators.

Last Wednesday, after gun control legislation failed in the Senate, Obama ate dinner with Democratic senators. A week earlier, he hosted Republicans. Lawmakers and aides say the effort, which also includes calls to individual members, has begun to yield modest dividends.

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