In the Vikings’ first two drafts under Rick Spielman, the team used a pair of picks on developmental quarterbacks, when they selected Tyler Thigpen in the seventh round in 2007 and John David Booty in the fifth round the next year. Since then, they have turned to the quarterback position in the draft for only one reason: to spend a first-round pick on a passer who might end their hunt for a franchise cornerstone. The Vikings marked the end of Brett Favre’s two-year stint in Minnesota by spending the 12th overall pick in 2011 on Christian Ponder. Three years later, after the fortunes of coach Leslie Frazier’s staff crumbled with Ponder’s performance, the Vikings traded back into the first round to get Teddy Bridgewater with the 32nd overall pick for new coach Mike Zimmer. Here the Vikings are, four years after the Bridgewater pick, again searching for a premium passer (this time more because of injuries more than ineffectiveness). The Vikings’ preferred method of solving the problem this time, following a trip to the NFC Championship Game, is almost certainly with a veteran, and that pursuit occupied much of their time at the NFL combine; Zimmer talked openly about the team’s questions with its three in-house options (Case Keenum, Sam Bradford and Bridgewater), while the Vikings positioned themselves for a potential bid for Washington’s Kirk Cousins. But whether it’s to acquire a developmental quarterback or snap up a player that might fall in a deep QB draft — particularly if they find the price for Cousins too rich for their blood — the possibility remains that the Vikings could dive into the draft for a quarterback for the first time since the Bridgewater pick.