Restaurateur Spike Mendelsohn is not just throwing his support behind D.C. Councilmember Tommy Wells for the next mayoral race, he’s helping the Capitol Hill personality stage a so-long-to-summer bash Sunday at the Capitol Skyline Hotel.

“The Last Hoorah of Summer” shindig is scheduled to run from 2-7 p.m. (or later, depending on how the scene is going) at the hotel’s rooftop pool (10 Eye St. SW). A suggested $25 donation to Wells’ mayoral campaign gets you in the door; potential revelers can RSVP here.

The entrance fee covers access to the water features and entitles attendees to snack on the selected nibbles — beef tartare on crostini, Brussels sprouts with béarnaise sauce, smoked trout mini tartines, mini croque Monsieurs — Béarnaise toque Brad Race will crank out for the occasion.

No dice on free booze, though Capitol Skyline General Manager Jeff Ragonese assured HOH that District Lounge plans to sling discounted beers ($5 a pop for Budweiser, Bud Light, Miller Lite, Yuengling, Corona, Corona Light, Heineken) and cocktails ($8 for Jose Cuervo-spiked margaritas and regular rail drinks) throughout the event.

This party marks the first time Wells and Mendelsohn are mixing things up politically, even though it sounds like it’s been a long time coming.

“They have gotten to know each other well over the past few years due to Tommy’s support of local business and start-up entrepreneurs,” a Mendelsohn aide said of the pair’s mutual admiration.