The ballot is set for the Nov. 6 recall election of two district councilors, with a challenger emerging for each. Sandra Wright, a Plymouth County commissioner and local Board of Health member, will face Councilor Michael Demos for his District 3 seat. Paul Sullivan, a former longtime Planning Board member and former town administrator, will run against Councilor Peter Riordan in District 7. Voters in the Districts 3 and 7 will receive two ballots on Nov. 6: one for the recall and one for the presidential and other races. The last day to register to vote in the recall election is this Wednesday. The Town Clerk’s office will be open from 8 a.m. to 8 p.m. that day.