The Iowa Democratic Party announced on Tuesday that it had completed its partial recanvass, changing results in 29 precincts but shifting no national delegates.

But the Epic of Iowa still isn’t over.

The recanvass drastically narrowed Pete Buttigieg’s small lead over Senator Bernie Sanders in state delegate equivalents: Mr. Buttigieg now has 563.207 to Mr. Sanders’s 563.127. The campaigns can now request a recount, which is a much more intensive process. And Mr. Sanders’s campaign said it would do just that.

“The recanvass process reduced the state delegate equivalent deficit by 97 percent,” Jeff Weaver, a senior adviser to Mr. Sanders, said in a statement. “We now believe a recount will give Sen. Sanders enough state delegate equivalents to put him over the top.”

The initial caucus results showed Pete Buttigieg with an extremely narrow lead over Mr. Sanders in the state delegate equivalent count. But campaigns and journalists identified a slew of irregularities and miscalculations, and Mr. Sanders’s campaign argued that those mistakes were enough to change the result.