Indiana's primary elections today will gauge the Republican Party's resilience following a significant challenge from former President Donald Trump. State lawmakers who opposed Trump's push for redistricting now face fierce competition from challengers he endorsed. Trump has publicly called for the defeat of these lawmakers, labeling them as disloyal. Notably, seven state senators are being targeted, with over $7 million spent by Trump-aligned groups on advertisements aimed primarily at Republicans who sided with Democrats in the redistricting vote. Among those facing challenges is Greg Goode, a first-term representative from Terre Haute, who voted against Trump’s plan after community opposition. Another incumbent, Jim Buck, has also received over $1 million in negative advertising against him. Despite these challenges, Republicans currently hold seven of Indiana's nine congressional districts, and the party anticipates maintaining this dominance in the upcoming elections. With half of the 50 state Senate seats and all 100 state House seats up for election in 2026, the stakes are high. As Trump rallies his supporters to vote for 'true MAGA Warriors', the outcome of this primary could set the tone for future Republican strategies in Indiana and beyond.