STAVANGER, Norway — Several hundred conservatives on the National Review’s summer cruise, which I was asked to attend as a speaker, are united in what they don’t like about the Obama administration and congressional Democrats, but divided on the best strategy for winning the Senate in 2014 and the White House in 2016.

On a panel titled “The State of the GOP and Conservatism,” Bob Costa, the magazine’s Washington bureau chief, asks if anyone agrees with Sen. Ted Cruz, R-Texas, who thinks Republicans should be willing to shutdown the government over the issue of defunding the Affordable Care Act (ACA).