I’m seeing a big fat zero.

President Obama’s campaign is calling on supporters to grade its performance amid a difficult early June for his reelection bid against presumptive GOP nominee Mitt Romney.

“This campaign is ramping up, and the decisions we make right now will shape our path to victory in November,” said campaign manager Jim Messina in an email to supporters sent Saturday night.

“That’s why I want your input, because you are the ones building this campaign on the ground in your community. We want to know from you what’s working, what we could be doing better, what you care about, and what you’re hearing about the President and this campaign,” said Messina.

The email contains a link to a survey asking backers to rate which issues are most important to them and the effectiveness of the campaign’s efforts so far.

The supporter survey comes on the heels of a difficult month for the president. . . .