Support among Portland voters to fix all four city elementary schools on the ballot next week instead of just two schools is gaining strength, according to an internal campaign poll released Sunday. The poll, which asked voters how they would vote on several questions appearing on the Nov. 7 ballot, showed that 59 percent of voters surveyed said they would vote in favor of Question 3, with 35 percent opposed and 5 percent undecided. Question 3 asks voters to authorize $64 million to renovate Longfellow, Lyseth, Presumpscot and Reiche elementary schools.