CNN has learned that House GOP leader John Boehner will appear next Tuesday night with other Republican leaders and Mississippi Gov. Haley Barbour at the Grand Hyatt Hotel in Washington, D.C.

Although the invitation, obtained by CNN, asks Republican guests to come in appreciation for “making calls, knocking on doors, [and] selling the fight,” GOP sources say they will do their best to keep the atmosphere low key.

“This event is not a fundraiser and it is not a ‘party’ – even if voters remove Democrats from power, you don’t celebrate at a time when one in 10 Americans are out of work and our children’s future is threatened by mountains of debt,” NRCC Communications Director Ken Spain told CNN.