The leadership of the Chicago Teachers Union will ask delegates to endorse Toni Preckwinkle  in the mayor’s race and Melissa Conyears-Ervin in the treasurer’s race, along with a host of aldermanic hopefuls. Candidates eager to be first — or last — on the Feb. 26 ballot will take their chances at a lottery Wednesday. Meanwhile, none of the ballot questions submitted to elections officials drew objections, meaning all will likely make it on to the ballot — as long as they survive the election board’s scrutiny. Now that the mayoral and aldermanic campaigns are in full swing, TDL brings you the first installment of trail notes with quick hits about all of the races.