When President Obama took office in 2009, congressional Democrats were euphoric. With control of the House, Senate and the White House, and high public approval for their new party standard bearer, Democrats eagerly embraced Obama and all the long-awaited policy initiatives he'd surely help them achieve.

In that first month, congressional Democrats mentioned Obama during floor speeches 200 or so more times than Republicans. In the next year and a half, the parties referred to the president at similar rates, sometimes with the Republicans having more to say, other times the Democrats.

One can reasonably assume that when the Democrats speak of the president publicly it's in a favorable way and when Republicans do it's, well, not quite as glowing. As positive public opinion of Obama began to dip after his first year, the spread between how often Republicans and the Democrats invoked Obama grew wider. Put simply, the Democrats weren't mentioning Obama by name nearly as much as Republicans.

The gap is particularly notable in the last year as seen in the chart above by the Sunlight Foundation, which measures how often any given word is spoken against all words in floor speeches and debates collected by the Congressional Record. Last fall, at the height of the government shutdown and the Obamacare rollout, Republicans were predictably discussing (bashing) Obama more.

But the trend has continued.

Much has been written this election cycle about the Democrats distancing themselves from Obama ahead of the midterm elections. Some Democratic candidates in tough races regularly emphasize their differences with the president. And Obama is persona non grata on the campaign trail (unless it's inside private high-dollar fundraiser dinners).

If the number of times they bring him up in front of the C-SPAN cameras is a measure, the Democrats detachment from the president is even evident on Capitol Hill � where every spoken word is recorded forever, so it's especially crucial to choose them carefully.

As my grandmother always said, "You can't take back the spoken word."

She also often said, "If you can't say anything, nice don't say anything at all." And perhaps Democrats simply don't have very many nice things to say.