Huh. I get emails and tweets and more from the Clinton campaign, and that's not the slogan that I see. (I suspect the misogynist Mr. Maher does not see those. . . .) And as for the polls, 538's amalgamation of polling does not show a tie.I'm not sure what the point of the ad hominem is. "Ready for Hillary" is a Super PAC that has since renamed itself "Ready PAC." If you Google it, you see their campaign-style bus with the slogan, plus plenty of pictures at rallies and events where people have the "Ready for Hillary" sign.
I'm not sure she has an official slogan. The campaign store features: "#HillYes" (as in "hell yes"), "Hillary y'all!," "I believe that she will win!," and "I'm with her." (I follow politics closely, but haven't subscribed to any of her emails, and couldn't have named one of those -- what does that say? And I live in a battleground state.) Contrast this with "Make America Great Again" -- which is a mandate, as was Obama's "Change."
As for the 538 polls: Clinton had a massive lead (10+ points) up until Trump secured the nomination. Since the model takes into account a longer window, this still carries over. The last 8 polls (all taken in May) range from Clinton +6 (CNN/NYT) to Trump +5 (Rasmussen), with Clinton averaging +1 -- that seems pretty close to me: http://www.realclearpolitics.com/epolls/2016/president/us/general_election_trump_vs_clinton-5491.html#polls
National polls don't really matter, since it comes down to some battleground states and it's way too early for state polling. But it's an indication that "Clinton +10" is pretty unlikely. 538 discusses this tightening of the race in their latest election podcast, but don't yet seem to have an article on it.
Of course, as you say, such polls cannot tell us much it's down to two nominees -- as it already is (and has been since mid-March on the Democratic side), but it won't settle down until Sanders stops suing the Democrats and demanding that Barney Frank be dumped from the convention and dissing Barbara Boxer and whoknowswhatnext. More important, who knows when such stuff stops; if he keeps it up, yes, that could screw it up.Of course it would be better for the Clinton campaign if Sanders just conceded already. But whatever Sanders is throwing at her isn't even in the same ballpark as what Trump will dig up. Recall that Trump had his "special investigators" go to Hawaii to try and proof that Obama was really from Kenya (and how many people, do you think, believe to this day that it's true?). Trump recently insinuated that the Clintons had someone murdered (to preserve my sanity, I'm not going to google whether there's a poll asking how many people actually believe that one). If you're expecting a more civil general election campaign than these primaries, I don't know what to tell you... it's probably not going to happen.
And, of course, 2000 also taught us to not look at the polls but to look at the Electoral College map. Analyses of that do not bode well for The Donald.I haven't seen much state level polling and what little there is predates the tightening of the race. I hope that Clinton will get her bump after the convention...