Former Vice President Dan Quayle has waded into another competitive GOP primary this week, endorsing businessman Bob Dold in the multicandidate race for Rep. Mark Kirk’s (R-Ill.) seat.“Bob is the right candidate at the right time for the Republican Party,— Quayle said in a statement from the Dold campaign.Dold is one of several candidates looking to succeed Kirk as the GOP nominee in the Feb. 2 primary, a race that includes businessman Dick Green and state Rep. Beth Coulson. Democrats have indicated that they plan to target the district, and marketing consultant Dan Seals — their 2006 and 2008 nominee — and state Rep. Julie Hamos are running for the Democratic nod next month.This is the second time that Quayle has endorsed a candidate this week. He endorsed 1996 gubernatorial candidate Ovide Lamontagne’s bid for the open New Hampshire Senate seat — another competitive, multicandidate primary in which most national GOP leaders are backing former state Attorney General Kelly Ayotte. Quayle last October endorsed Todd Young (R) for Rep. Baron Hill’s (D-Ind.) seat; however, Young is related by marriage to the former vice president.