How could I forget Roger Daltry on "Won't Get Fooled Again" and "Love, Reign Oe'r Me"?  Ditto Carly Simon on "Haven't Got Time For The Pain,"  Karen Carpenter on "Close To You," (especially "just like me-ee, they long to be..."), Rod Stewart on "Handbags and Gladrags" and "The First Cut is the Deepest," Dusty's "The Look of Love,"....

Lets toss in Mama Cass on 'Words Of Love', Petula Clark on 'Sign of the Times', Grace Slick on 'Somebody To Love' (how long does she hold that note?), Pat Benetar on 'Hell is For Children', and Ann Wilson on anything.

Yes, I like all of those too.  My favorite of Petula's vocals is on a big ballad called "Where Did We Go Wrong?"  (My favorite of her tracks is "I Know A Place," which obliquely refers to the Cavern Club.)   And Mama Cass's vamping on the M&P's version of "I Call Your Name" has justifiably led many people to list it as one of the greatest Beatles' covers.  Ditto Pat Benatar's "Helter Skelter," and Heart is one of the very few acts to have ever covered "I'm Down."

That was really hard. I like Freddie, Paul and Elton about the same but gave it to Freddie.

I think Marvin Gaye has a better voice than all of them but he wasn't on the list :\

David Bowie- Heroes

Consider this:
Freddie Mercury had an amazing vocal power, but... in his last decade he sang really bad in concerts. He didn't reach the high notes, always stay in a limited vocal range. I think that's crap, because you just have to sing live as you sing in the studio.
So, of the options I choose Sir Paul McCartney because he sings really good as today.

But definitely the best singer ever is the marvellous Stevie Wonder. His voice is so beautiful, and so incredibly high, I've never seen somebody singing with such strength. My second favourite is Michael Jackson, an incredible vocal power.

Quoted from Puggy

I think Marvin Gaye has a better voice than all of them but he wasn't on the list :\

Macca- he has quite the range

If we're talking about best vocals and not favorite then I'd definately go with Paul McCartney of 1967-1979. Those twelve years of singing he could reach almost any vocal range humanly possible.  The man had a voice that was a gift from god. He did almost all genres of music at those times. He had the deep rugged Rock'n'rol voice for songs like WildLife, I've got a feeling, MoonkBerry Moon Delight, Why Don't we do it in the road etc. He had higher pitched songs like When The Night(He also uses a deeper voice in the end) My Love, Get Back, Mamma's Little Girl, Heart of the Country, Oh Woman Oh Why, Let Me Roll it and so many more. No other singer had the vocal range he did. The other singers listed on the poll are great singers but they just didn't have the range McCartney had.

I'd choose Paul McCartney, he has & still does show great strength's in his vocals.
He still rocks out singing songs like Mama Only Knows & Nod Your Head.
Agree Puggy, Marvin Gaye was an incredible singer & i rate him highly! His
vocals on the album Let's Get It On knocks just about anybody out!  

jim morrison could really belt it out.

Robert Plant and John Lennon have been the only ones in that selection that have given me the shivers many times. My favorite vocals though would probably be one of the Wilson brothers though.

I voted for Freddie on the list as his voice was the best thing about Queen
Other Male voice's i rate are :

Paul McCartney
John Lennon
David Bowie
Marvin Gaye
Marc Bolan
Nick Drake
Philip Oakey
Bob Dylan
Elvis
Stevie Wonder
Lou Reed
Chris Martin
Cliff Richard ( not a fan but he did have a good voice )

Female voice's i like:
Kate Bush
Dusty Springfield
Janis Jopplin
Karen Carpenter
Agnetha Faltskog
Annie -frid lyngstad
Annie Lennox
Alison Moyet
Shirley Bassey
Whitney Houston
Lulu
Tracy Chapman

DaveRam

my favourite singers are

paul mccartney
freddie mercury ( not my style of music but his voice is amazing)
sting
john frusciante
morrisey
brandon boyd (incubus singer probably best voice in rock today imo)
thom yorke
matt bellamy
jeff buckley
ray davies
damon albarn
kate bush
nick drake
bjork
anthony from anthony and the johnsons
janis joplin
debbie harry

my favourite singers are

paul mccartney
freddie mercury ( not my style of music but his voice is amazing)
sting
john frusciante
morrisey
brandon boyd (incubus singer probably best voice in rock today imo)
thom yorke
matt bellamy
jeff buckley
ray davies
damon albarn
kate bush
nick drake
bjork
anthony from anthony and the johnsons
janis joplin
debbie harry