From today’s Morning Memo:

The fond relationship between Democratic Gov. Andrew Cuomo and Republican Nassau County Executive Ed Mangano has been well documented over the past several years.

Not only did the two team up in the aftermath of Hurricane Sandy, with Cuomo praising Mangano for his leadership during the storm, but the governor also said nothing when the county executive ran a TV ad during last year’s campaign that seemed to indicate he had Cuomo’s endorsement for his re-election bid.

The ad in question featured Cuomo lauding Mangano for his support of the 2 percent property tax cap – a major policy initiative of the governor’s first year in office.

Technically speaking, Cuomo endorsed his fellow Democrat, Tom Suozzi, as he sought to take back the job from which Mangano had ousted him in 2009.

But the fact that Suozzi, who once harbored gubernatorial aspirations of his own, failed in that effort didn’t seem to bother Cuomo in the slightest.

Today brings yet more proof that the Cuomo-Mangano bromance is still going strong.

Cuomo’s public schedule calls for him to be in Bethpage at 10 a.m. to attend Mangano’s swearing in ceremony. (Caveat: The weather might force the governor to change his plans, or turn his Nassau County appearance into an impromptu emergency storm update).

There have been a lot of these ceremonies all across the state as newly elected and re-elected officials – some of them even Democrats! – take office. And the governor opts to attend a Republican event.

Cuomo did call off his traditional New Year’s Day executive mansion open house to attend New York City Mayor-elect Bill de Blasio’s public inauguration yesterday in Manhattan along with Democratic luminaries like former President Clinton and former Secretary of State Hillary Clinton.

But the governor really could hardly afford to skip that one, since his absence would have set the rumor mill into overdrive with speculation about 2016 tensions between him and the former first lady.

Long Island is again going to be a battleground in this year’s battle for control of the state Senate.

We learned on the final day of 2013 that now-former GOP Sen. Chuck Fuschillo would no longer be serving in the chamber as of 11:59 p.m. that very night.

There will be a major fight for that open seat, which the Democrats think they have a chance to win, thanks to their enrollment edge in the district.

Another Long Island seat – the one currently held by Republican Sen. Lee Zeldin, who is challenging Democratic Rep. Tim Bishop this fall, is up for grabs.

Cuomo did not do much to assist his fellow Democrats in their quest to win the Senate majority in 2012, and he also didn’t block the power sharing deal between the GOP and IDC that prevented the Democrats from exercising the power of their numeric majority.

He has yet to say one way or another whose side he’ll be on in the 2014 battle, though his willingness to hang out with the top GOP elected official in Nassau County – home to Senate Republican Leader Dean Skelos – speaks volumes.