Not gonna lie, he has a better case than I envisioned when I came here to type "sorry, not feeling it." During his career from 1993-2009, he ranked eighth in homers, behind five steroid guys who are never gonna sniff the HOF (Bonds, A-Rod, Sosa, Manny & Palmeiro) as well as Thome & Griffey. He was fifth in RBIs behind Manny, A-Rod, Thome & Sosa. He was 20th in OPS and the only non-HOFers, non-steroid guys ahead of him are Lance Berkman, Ryan Howard & Matt Holliday. Among the HOFers behind him in OPS from '93-09 are Griffey, Piazza, Ortiz, Gwynn, Mauer, McGriff & Rolen.
But...Delgado is right in between Holliday, Jason Giambi, Juan Gonzalez and Mo Vaughn in OPS. Is that really HOF company? And is being ahead of McGriff & Rolen really an argument he belongs? (This is another topic, but Rolen has to be the least impressive BBWAA-elected HOFer ever, did anyone ever say "I'm going to the park today to see Scott Rolen?") He also ranks just 39th in WAR at 44.4, behind not-in-a-million-years non-HOFers such as Brian Giles and Mike Cameron.
I think Delgado had to get to 500 homers just to get on the radar. I always thought Thome was a borderline guy for the era in which he played, but Thome has 28.6 more WAR and collected 139 more homers and 290 more hits with an OPS 27 points higher despite having just 1,656 more plate appearances.
I agree Delgado is a victim of his era--people are saying, with a straight face, that Giancarlo Stanton is a HOF candidate if he gets to 500 HRs--but that's been true of guys in every era. Dave Stieb would be a first-ballot guy if he put up his numbers today.
The good news is this year is the year for 1980-present players on whatever the hell they'll be calling the veteran's committee by then, so Delgado will get a chance to get on the ballot. The bad news is...sorry, not feeling it. :D
(As for intangibles, I'm all for him ducking into the dugout during the anthem, but he was known as a clubhouse lawyer. Check out his numbers in 2008 before and after Willie Randolph got fired by the Mets.)