The e-mail comes ahead of a June 8 Democratic Senate primary runoff between Lincoln and Lt. Gov. Bill Halter. The TPM Poll Average shows Halter leading Lincoln 47.3%-44.7%.
Here's the full e-mail:
I have known Blanche for a long time and this I know to be true: Blanche Lincoln always does what is right for Arkansas. No matter what.
In all the years I have known her, when I've asked her for something, if Blanche doesn't think it's good for Arkansas, she smiles at me, tells me how much she loves me and then tells me "No, Joe."
That is exactly why you want her fighting for you in Congress, and that is why you need to support her right now.
She is just 6 short days from a highly contested runoff election and needs your support right now to turn out her voters on June 8. Take it from me - these are the most critical days of a campaign. The best thing you can do to help is to stand with Blanche today.
Click here to stand with Blanche today -- she needs your help right away.
Much like you, I've been paying close attention to latest developments in this race. And let me tell you, I am all-hands-on-deck for my dear friend's campaign. But I need you to be here too and let me tell you why.
Blanche has a consistent record of fighting for Arkansas. That record includes standing with me and President Obama to pass the most historic health reform this country has ever seen.
Blanche needs you to come out and vote in runoff on June 8, but right now she needs to know that she has your support. Will you stand with me in supporting her today?
Thank you for standing with my friend Blanche Lincoln. She's been Arkansas's strongest advocate and now we have the opportunity to stand up for her.
Vice President of the United States