washington quarter republicans think white house hopeful ted cruz disqualify serve u.s. president bear canada american mother new reuters/ipsos poll find republican voters nearly mirror independents broad electorate belief cruz hold white house 27 percent voters 28 percent independents respond disqualify cruz u.s. senator texas bear u.s. citizen mother cuban father calgary alberta brush aside attack eligibility pure politics question could hamper ability rally broad republican support would need win party nomination run presidency november election 47 percent voters survey respond think cruz qualify president regard citizenship 26 percent say sure poll take jan. jan. 14 question cruz eligibility become one heat moments thursday night republican primary debate new york businessman reality tv star donald trump make question cruz eligibility regular attack line campaign trail debate stage already know democrats go bring suit big lawsuit head run become nominee hell know even serve office trump say thursday night debate go get declaratory judgment let court decide cruz try use trump previous word response back september friend donald say lawyers look every way nothing cruz say since september constitution change poll number have trump become conservative darling 2011 repeatedly question president barack obama eligibility president insist president may bear another country demand see birth certificate obama bear hawaii make trump one well-known birthers term use describe insist obama bear elsewhere constitutional issue question requirement president natural bear citizen cruz 45 argue become citizen time bear make qualify natural bear opponents argue time write constitution natural bear would require bear american soil u.s. senator john mccain run republican nominee 2008 bear panama argue meet requirement birth take place u.s. military installation american soil poll confidence interval percentage point pose two question two separate poll voters one group ask cruz eligibility half ask generic question eligibility anyone bear canada american parent report ginger gibson chris kahn edit grant mccool sap sponsor coverage independently produce staff reuters news agency quarter republicans think cruz 's birthplace disqualify president poll