Sen. Ted Cruz said Wednesday morning that a contested Republican convention is certain and that supporters of Donald Trump are ultimately helping Hillary Clinton reach the White House.

During a radio interview for a Philadelphia morning show, Cruz predicted with certainty that the Republican Party is “headed to a contested convention.” He suggests Trump supporters “might as well put a Hillary sticker on your car.”

.@TedCruz on Philadelphia radio: "Last night Donald Trump had a good night. He won his home state." Everyone expected him to. — Patrick Svitek (@PatrickSvitek) April 20, 2016

.@TedCruz reiterates he has a "standing invitation for a one-on-one debate with Donald any time." — Patrick Svitek (@PatrickSvitek) April 20, 2016

CRUZ: "We are headed to a contested convention. At this point, nobody is getting 1,237." — Patrick Svitek (@PatrickSvitek) April 20, 2016

– Have hosts like @SeanHannity been unfair to you?

– @TedCruz: "There are hosts who make the decision to go in the tank for Trump." — Patrick Svitek (@PatrickSvitek) April 20, 2016

.@TedCruz names Rush Limbaugh, Mark Levin (an endorser) and Glenn Beck (endorser) as radio hosts he likes at this point. — Patrick Svitek (@PatrickSvitek) April 20, 2016

.@TedCruz talks up his family roots in the northeast. "I have an army of cousins in and around Delaware and Philly," he says. — Patrick Svitek (@PatrickSvitek) April 20, 2016

On Israel, Cruz says Trump is "in some ways even worse" than Clinton/Obama on Israel because of his position on aid. — Teddy Schleifer (@teddyschleifer) April 20, 2016

.@TedCruz suggests those supporting Trump "might as well put a Hillary sticker on your car." — Patrick Svitek (@PatrickSvitek) April 20, 2016