Sen. Cory Gardner endorses Cruz
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Sen. Cory GardnerCory Scott GardnerThe Hill's Morning Report — Trump and the new Israel-'squad' controversy Colorado candidates vying to take on Gardner warn Hickenlooper they won't back down Hickenlooper ends presidential bid MORE (R-Colo.) is endorsing Ted CruzRafael (Ted) Edward CruzO'Rourke says he will not 'in any scenario' run for Senate A US-UK free trade agreement can hold the Kremlin to account O'Rourke says Trump 'terrorizing' immigrants in campaign relaunch speech MORE for president.

Gardner called Cruz "a fierce defender of the Constitution and a tireless advocate for conservative principles," according to a statement released by the Texas senator's campaign Wednesday. 

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"It’s time for Republicans to rally behind this campaign in order to put forth the best candidate to stop Hillary ClintonHillary Diane Rodham ClintonThe Hill's Morning Report — Trump and the new Israel-'squad' controversy Colorado candidates vying to take on Gardner warn Hickenlooper they won't back down Trump seeks to project confidence on economy at New Hampshire rally MORE in November," said Gardner, who previously backed Sen. Marco RubioMarco Antonio RubioThe Hill's Morning Report — Trump and the new Israel-'squad' controversy Trump crosses new line with Omar, Tlaib, Israel move Top Foreign Affairs Republican: 'It would benefit all of us' for Omar, Tlaib to visit Israel MORE (Fla.).

Gardner added he was "thrilled" to support Cruz.

Cruz said he was "honored" to have the support of the Gardner, who is the sixth senator to publicly back Cruz, joining Jim RischJames (Jim) Elroy RischOvernight Defense: US exits landmark arms control treaty with Russia | Pentagon vows to 'fully pursue' once-banned missiles | Ratcliffe out as intel pick | Trump signs budget deal that boosts defense | Trump defends North Korea's Kim as 'friend' The 23 Republicans who opposed Trump-backed budget deal Landmark US-Russia arms control treaty poised for final blow MORE (R-Idaho), Lindsey GrahamLindsey Olin GrahamTrump to meet with national security team on Afghanistan peace plan Trump crosses new line with Omar, Tlaib, Israel move Top Foreign Affairs Republican: 'It would benefit all of us' for Omar, Tlaib to visit Israel MORE (R-S.C.), Mike LeeMichael (Mike) Shumway LeeMcConnell, allies lean into Twitter, media 'war' Conservatives buck Trump over worries of 'socialist' drug pricing Criminal justice reform should extend to student financial aid MORE (R-Utah), Pat Toomey (R-Pa.) and Ben Sasse (R-Neb.).

"I am honored to have Cory’s support and look forward to working together to continue to coalesce Republicans around this campaign," Cruz said in a statement.

The announcement comes amid speculation surrounding Cruz's plans to make a "major announcement" Wednesday afternoon in Indiana. Reports are indicating Cruz will announce his choice of Carly Fiorina to be his running mate. Fiorina, a former Hewlett-Packard CEO, dropped her own White House bid earlier this year.

Cruz is hoping to deny GOP front-runner Donald TrumpDonald John TrumpWarren unveils Native American policy plan Live-action 'Mulan' star spurs calls for boycott with support of Hong Kong police Don't let other countries unfairly tax America's most innovative companies MORE delegates in the Indiana primary next week after the businessman moved closer to locking up the GOP nomination by winning five Northeastern primaries Tuesday.