Iowa conservatives are becoming increasingly concerned by Senator Chuck Grassley’s refusal to “just say no” to President Obama’s health care reform plans. Grassley is part of a group of six Senate Finance Committee members who are working on a compromise bill. While some Republicans are hoping that defeating health care reform will become Obama’s “Waterloo,” Grassley has warned Republicans should could pay a price for blocking reform.

Now it’s not just Bill “crazier than Steve King” Salier who is floating the idea of a primary challenge against Grassley. Craig Robinson wrote at the Iowa Republican blog on Thursday,

The longer Sen. Grassley strings along Iowa Republicans, the more difficult his re-election effort may become. At the beginning of the year, it would have been absurd to suggest that Sen. Grassley could face a legitimate primary challenge. Now, with each and every passing day that Grassley flirts with supporting some version of health care reform, the possibility of a primary challenge grows. In fact, some Republican sources have told TheIowaRepublican.com that if Sen. Grassley votes for President Obama’s healthcare proposal, Grassley will indeed face a serious primary challenge.

Republicans needn’t worry about the game Grassley is playing on health care. I’ll explain why after the jump.