Voters in Wisconsin's GOP primary Tuesday are poised to help former Massachusetts Gov. Mitt Romney wrap up his dogged, well-financed quest for the Republican presidential nomination.
But the winner-take-all primary and Romney's drawn-out battle with former Pennsylvania Sen. Rick Santorum have been overshadowed by the campaign to recall GOP Gov. Scott Walker, whose anti-union efforts since his 2010 election have cleaved the Badger State.
After months of upsets and indecisive results, there were signs this week that the battle for the 2012 Republican presidential nomination may be entering its final stages. Mitt Romney has a huge lead in delegates, and some big endorsements are rolling in. Host Scott Simon talks with NPR's Don Gonyea in Wisconsin, which has a primary Tuesday.